May

Essays of an Information Scientist, Vol:2, p.272-278, 1974-76
May 19,
Current Contents, #20, p.5-11, May 19, 1975
Number
1975
In the past, Ihavefrequently
distinction between the literature
stressed
the
ofa specialty
and the literature ofintereat to research workers in the specially. This paper reports a citation analysis of agricultural journals. The most
telling example of the distinction 1 have tried to
stress may be that reported here on fhe firerature of agn”csdture and the Literature of interest
to agnkulturalscientists.
As a starting point in the citation analysis,
we arbitrarily defined as an ‘agricultural journal core’ journals in “obvious” agricultural
categories in the journal lists of the Science
Citation Inde~ (SC@. ‘ The categories in.
c1ude agriculture, fd
technology, botany,
entomology, ecology, fishen”es, forestry, horticulture, parasitOIogy, soil science, etc.
Also
arbitrarily, we added a few journals that we
thought appropriate,
for example, Pesticides
Biochemistry and Journal of the Association o]
oficial (formerly Agricultural) Chemists. We
deliberately omitted from the study genetics
and microbiology journals. In addition, we did
not want the obvious dependence of genetics on
basic research to skew the results that intuition
suggested should be expected in analyzing citation patterns of more ‘applied’ agriculture journak. Nor did we include major multidisciplinary journals, in which we know agricultural
scientists publish as frequently as they can. We
fully expected, on the basis of previous studies
of this type, that these journals would account
for themselves,
This “core journal” base comprised 347
journaIs.
As in some previously reported
studies, z” we treated them as a unit to discover what journals they as a unit cite, and
what journals cite them as a unit. The data base
used in the analysis was composed of citation
data from the last quarter 1969 SC1 The methodology
has
been
explained
in detail
elsewhere.’
20
The results of our analysis are shown in
Figures I and 2. The figures give only the top
75 journals in each case. These are, however,
quite sufficient for the purpose of this report.
Figure 1 shows the 75 journals most frequently cited byour agricultural core. Actually
the core cited some 1650 items, plus innumerable theses, but most of the 1650 items were
journals. The core journals referenced the 1650
items with a total of 39,956 citations. The 75
journals on the list in Figure I account for
56.8% of those nearly 40,000 citations. The top
50 on the list account for 48%. This concentration exceeds that previously reported for science as a whole, where 50 journals account for
about 33~0 of all citations, and 75 journals for
about 4CFZ0.4
Figure 2 shows the 75 journals that cited
(made reference to) our agricultural core most
frequently. Actually, the core journals were
cited by some 395 journals, as compared to the
1650 items that they cited. The core referenced
these 395 journals with 13,031 citations. Again,
the top 75 journals on the list account for most
of them, 88.3%. The first 50 account for 77%.
Before touching on details of the lists, I
think we can say something important about
the ‘agricultural literature’, though it may be
obvious by now. The agricultural core journals
cite other journals much more widely than they
are cited by other journals. That fact, in my
opinion, overrides anything else that may be
said about what constitutes the ‘agricultural
literature.’ It poses the question that is at the
base of the distinction I have previously mentioned: what is the literature that agricultural
scientists use? From these results, it is apparent
that it is definitely not congruent with the
‘literature’ that agricultural scientists produce.
One must wonder, then, just what is meant by
an ‘agricultural
library’, or an ‘agricultural
information service’. An examination of the
tCondensed from Gartleld E & Weinstock M. Wh
s the literature ci[ed by
scientists? A case
. amicul[urd
.
study. Paper presented al the World Congrrss of the International Association of Agricultural Librarians and
Documentalists. Mexico City. 14-IS April 1975. Printed In: CurrenrConfenf.s (CC )NrI. 20, 19 May 1975,
272
Ff~
1. Jomsmls Most FreqmemtlyC35edby ‘Agrkmftme Gxe’ Jonmafs. An asterisk indicstez thst the journal
also appears on the list in Fii
2.
A = total citations by all jnurssals. B = total citatiom by ‘agriculture core’
journals. C = self-citations. D = B/A (agriculture’ citations in terms of totsl citations). E = C/A (self-citatiom in
terms of total citations, s.df-cit cdmtc). F = C/B (self-citations in terms of ‘agriculture’citations). G = Impact factor
(see reference 4). H = CFJrrent
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Figure 2. Journals that Most Freqmntly C5ted ‘Agriculture Cord Journals.
Anasterisk
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3. $onmds MOSSFmqaentfY C3ted bY ‘Atm5colmreCore’ Joumah For sigohioance of column headings,
see Iegeod of Pie
1. [n shis list, the jourmds hwe been ranked by she pcrceotage in colomn D (agriculture’
oitetions in temm of S0381citstioos).
XMIRNAL
1. J, RansP ManaWII.=
2. weed sci.*
3. J. Econ. EMWWI.*
4. ~“
5. J. Arm,. Sot. HmF. Sci.*
6. P&t 0+s. Rap.
7. Canad. Entowml.
a. Cared. J. plant Sci.
9. Agron. J.*
10. son sci. sec..
11. Crop Sci.
12. J. wldl. MOIWWM.
13. 5eJ sci.”
14. Fwd Tedmol.
15, Austr, J. Agr. Res.*
16. J. 130iry .5&g
17. Plant PhysiG4.*
18. Em. Gazette
19. T. W+. Myd. 30C,*
20. J. Animal Sci.*
21. Poultry sci.*
22. Cmod. J. SOL*
23. Ann. En?om. 50C. Am24. J. Agr. 3ci.*
25. J. Agr. Focal Chem.*
2.s. cereal olelll.*
27. J. Aw. Res.
28. Mycc.lc+*
29. J. Exp. Dot.
30. Am. sot.
31, An!.,. J. SC+.*
32. Physi.d, Fimt.*
33. Amu. Rw. 910nt Phys.
34. New Phyt&giM*
35. J. ASS. Gff. An, Chern,*
36. Fia”t sow
37. PLY”t cdl W@Ol,*
28. Exp. Pomsitol.*
39. Phlnta*
40. J. 56. Food Ag..e
41. POrOsitOicgy*
42. J, Par.asitc.logy
43. J. Focal S.i.
44. J. FidI, Ret. s4. Cm.*
43. Agr.Sic.1.
Chern.*
46. J. Anirml Eml.+
47,
48.
49.
30.
51.
52.
53.
54.
5s.
56.
57.
58.
59,
40.
61.
.32.
63.
64.
63.
66.
67.
68.
69.
70.
71.
72.
73.
74.
7s.
A
B
c
126
311
120
275
778
1460
301
236
182
40
171
m
022
182
.
55
32
163
112
104
112
61
62
89
1713
357
284
225
138
727
553
353
180
629
346
308
902
1439
312
263
734
697
548
329
4m
509
284
267
202
337
424
1171
482
290
295
478
202
203
428
707
367
297
708
383
336
356
PhvOchernistry*
Am. Ap#
SiO1.
58a
453
Zbl.
407
B.kt.
Pwasitenk.
577
Ecology*
J. ProtozooL
446
J. Insect FIIysiol.*
AMT.
J. Sii.
$xi.*
583
An”. TrqJ, Med. Porm
T. Roy, SOC. Trop. Med.
38 I
AppL WCrobol.*
Amer. J. Trop. Med.
583
854
Hyg,
J, Nutrition
J. Gen.
12W
1438
Miaobiol.
413a
15310
J. Bacterial.
Natume
tirokgy
Sio<hetn.
553
2373
7625
J.
S.ie”ce*
3.347
9739
A..dyt.
Chent
J. Cell sW.
4219
4769
Siochim. Siophys.
J. Biol. Chent.
9s00
Arch,
Siochern. Siophys.
Acte*
17103
C.xmtes
Rem+x D*
P. S’&c. Exp. Biol. Med.
Ann. New York Amd. Sci.g
P. Not. Aoxl.
S<i. USA
J. Chem. Sot.
J. Amer. Chant
S=.
5642
sol1
3756
8206
I3978
26307
:E
m
25S
128
443
242
212
619
1107
210
In
482
456
357
211
269
324
182
)67
183
20s
255
696
2s3
170
172
277
1M
114
240
391
202
161
36a
197
164
172
11s
273
2W
186
25)
191
180
184
113
110
107
153
201
145
319
1128
171
528
247
638
251
234
43a
791
256
168
107
196
142
218
275
0
95.2
88.4
86A
85.2
84.3
82.5
80.9
76.8
72,8
72.3
72.2
71,1
70,4
70.0
48.0
tS.6
382
67.5
200
67.3
9
65.8
73
45.7
247
65.4
351
65.2
62
44.1
64
64,1
I&
63.7
98
43,6
71
42,6
51 61,3
63 60.0
30 60.1
73 59,4
52 36.7
—
38.6
54 5s.3
57.9
181
52 57,4
75 34.2
16} 54.1
123 55.3
55.0
44 54,2
842 52.0
51.4
41
48.8
122
48.3
143
4s,1
50
46.4
153
—
46.1
45.7
166
43.5
118
42,8
104
37.0
139
31.4
32 29.7
19,9
— 18,4
17.9
14.6
— 10.I
7.7
7.4
— 7.2
6.9
6.8
6.6
6.0
4.9
4,6
4.6
4.5
34
.
— 2.9
2.4
.
— 1.0
0.8
.
E
47.6
5s.0
54.4
48.0
5Q.O
F
50.0
62.2
65.3
56.3
60.5
30,2
30.2
30.8
m.3
28.0
29,5
40.8
62.2
87.5
9,7
13.8
17.9
25,6
28,9
42.0
42.4
61.9
12,2
18.1
2,9
4.3
42.2
27.8
33,7
S1.o
30.4
77,0
11.3
17.4
19,5
20.3
25.2
39.4
19.3
30.3
24.8
39.0
—
—
16.9
27.6
18.7
30.7
7,)
7.1
6.2
10.5
10.8
18,4
—
—
18.3
31,4
37.9
6S.3
25.7
44.8
37.0
65.8
37.6
67.1
17.4
31,S
43.1
23.7
14.8
27,3
11.3
21.7
10.7 m.8
36.3 74.4
40.2 83.1
20,9 43.5
26.0 34.0
.
—
40.8 89.3
m.5
74.9
54.5 23.3
28.5 77.2
24.4
23,2
22.4
8.4
28.3
—
—
—
G
0.551
%
1,078
0.392
0.268
0.445
0.615
0.867
0.712
0.501
0.923
0.787
1.051
0.507
1.6s2
0.6s8
0,830
0.405
o.48a
1.217
0.537
0.912
1.665
1.210
—
0,901
2.400
1.443
0.956
1.796
7.047
1.362
t+
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
AL
AL
AL
AL
AL
A
A
A
AL
A
AL
AL
AL
AL
AL
AL
AL
AL
0,988
1.785
3.(W3
2.9U
0.s81
0.866
1.351
0,871
0.929
0.795
1$Q7
1.2a6
0,703
1.2s6
0.884
1.932
1.957
1.398
1.278
2.078
2.C47
2.337
3.594
2.244
4.7m
3.193
3.519
2.894
1.661
3.484
3.2a7
6.371
0.780
1.964
1.815
8.828
3.123
5.859
A
AL
1
AL
A
L
L
A
A
AL
A
AL
A
L
AL
AL
L
AL
L
L
AL
L
AL
L
L
AL
L
L
L
AL
L
L
L
L
AL
L
L
L
L
L
S%re 4. JoaPo* tlZSItMost Fr@wsnt2YCX&d“k2cnMur6 G-’ hwmf.z. For sigzii2icakzccofcolunzn hudings,
me legend of Figure 2. In this list, the jow-nsls have been ranked by the perccnozge in column D (’agriculture’
cit4ti0ns in terms of total citations).
X)URNAL
A
1. J, Econ. En?cmoL*
2. Wmd sci.*
3. PhytOIMh.dOfN*
4. J. An!!
b::g
5, 3el 3ci.*
6. AWOII. J.”
7. Amer. Point.a J,
8, Zucker
9. J. Oaby Sci.=
10. Mm
NOWI
11. CWOd ch6m.*
12. ~
Sci.*
13. 1. &it. Mycd. S.*
14. J. Am. S. Hon. S&*
15. J, 306 Sd.
16. PtO”t Fh@Ol.*
17. J. Aw. &i.*
18. J. Etit, Grout.
19. 304 S& SoC.*
20. Wood R-..
21.
22.
23.
24.
25.
26.
27,
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
J. AM. OH. b.
Ch.*
Amer. J. ht. ●
J. RaIW MOIKZZOM.*
M*.
Rw.
6oton.
J. Aw.
Food
chsM.*
Conod. J. BOI.*
Au$tr.
J. Aw.
Rm.*
9uH. Entomot.
Pbn*
Rm.
Sc4*
Phylic4. %“I.*
Now PhytOlO@t*
Armu, u.,,
Pl@OpOlh.
1. Pikmzenphy>.
J. Sci. bad Aw.*
P!+nt C*IIPhy$id.*
EcotD@
Pbntd
B. Ton*yBOI.
Club
Filyw
J. A.m. 1.Ag?.
J. Animal
Ecd.*
u.
45.
Agr.
46,
47,
J. In=t
Ph@d.+
P?ot.pb,fncl
48.
49.
J. Fish. R.s. Bd, *
Ann. En+. Sot. Am.*
50.
51.
Ild.
52,
53.
T. Amer. Fish,
Pmmsitology.
54.
Forest
55,
Z. Pfianze”*.cht.
56.
J. St.afed
57.
EKP.
58.
Ber.
59.
60,
61.
62.
63.
64
65
66.
67.
6s.
69.
70.
71.
8iol.
Zwhr.
Chern,*
P.rmitmk.
J. Agr.
Sci,
Phytochunist@
Sq,
Chmn
Prcd.
R.,.
Pormit.al.*
Bet, Ge$.
P. NASIndiaA
Oikm
Theor.
A@. Gemt.
0..1.
Can.d. J. Zool.
Mycop. Myed. A@.
J. FlePr.
Fer?iL
J. Sci. I“d,
R. 8
Austr. J. Bid
S.i..
Arch. Mikrobiol.
Appl. Mitrobiol.+
J. Chronmtcg,,
ComP.
Siwherr,.
72.
73,
C-IPW
science.
Nature.
74.
75.
Ann.
3iih,
Reti.-
D“
NY Accd, Sci. *
Bioph, Acto*
c
B
4&3
1445
251
564
2820 1029
249
964
144
405
10C4 255
64
162
162
56
1350
406
2t4
72
w
301
1291
414
171
549
235
753
94
302
960
300
653
194
3.65
101
m
175
132
447
242
87a
162
590
81
298
!20
444
772
m5
902
238
I94
76s
163
669
5s
238
192
820
52
223
lCM
486
579
123
452
2181
84
414
146
72a
162
820
194
W1
1C45
213
264
67
65
364
102
580
46
389
104
1108
434
68
174
1129
965
143
166
1174
95
673
I35
959
207
1473
3&6
54
61
441
485
63
54
418
452
57
2219
260
67
669
65a
54
739
60
62
776
106
1663
\ 77
2B31
1203
69
55
976
1245
66
69
1318
1453
54
2506
91
57
1945
108
3784
56W
2
6777
73
1046!
71
10269
508
D
45.6
44.5
26.7
26.2
26.1
35.2
35.2
24.6
245
&
65 23.7
32,9
22.0
::,
72 31.2
162 31.1
27 31.1
!4w 31.2
106 29.7
61 29.2
112 28.4
24 28.3
101 27.6
73 27.5
60 27.2
51 27.0
26.6
6
93t 26.4
25.3
62
24.4
69
24.4
45
23.5
52
23.3
13
22.2
52
21.2
54
20.0
20.8
24
19.a
87
19.8
75
19,6
118
123 19.6
13 18.3
12 17.9
\7.6
19
17,0
30
143 )6.6
I5.7
40
15.4
139
14.8
14.4
122
64 14.1
52 14.1
153 14.1
14.0
32
13,8
44
29 13.0
12,9
21
18 12A
161 11,7
10.0
m
8.5
— 8.1
8.0
6.4
6.3
84
5.7
—
5.6
—
5.3
—
5.2
—
3.7
—
3.6
—
2.9
—
—
2.9
1.0
—
0.8
.
0.7
—
—
0.7
171
822
247
61
162
2P
276
E
25.1
F
n.o
20.3
31.2
25.6
15.1
16.2
26.6
24.6
28.3
30.4
23.4
27.2
13.3
24.1
8.9
20.8
16.2
17A
16.4
6.0
20A
12A
20.1
11.5
0.8
10.9
8.1
13.3
10.9
6.3
M
10.6
9.3
—
5.8
11.8
9.2
11.9
11.3
3.6
3.3
3.3
12.9
12.9
9.2
12.3
68.1
79.1
?0.5
41.4
45.9
al.3
W.9
82.0
W.3
71.7
S4.8
42.7
10.4
9.5
5.4
10.4
8.3
10.0
6.0
5.0
4.0
7.3
3.0
n.4
24.7
44.7
54.6
60.4
44.0
21.2
74.8
45.1
74.1
42.5
2.9
41.2
31.9
546
77.6
26.9
25.0
48.1
43.9
27.9
59.6
46.3
60,8
57.8
19.4
18.5
18.6
75.8
77.7
36,8
84.0
73.5
47.4
38.5
74.0
59.3
72.1
46.0
38.9
31.6
61.9
29.9
—
G
H
0.782 A
1568 A
1.078 A
0.405 AL
0.923 A
0.947 A
0.342 A
—
A
0.507 A
0.428 A
1.210 A
Odm AL
0.830 AL
0.392 A
OM1 A
1.643 AL
0.912 A
0.612 A
0.667 A
—
A
Al
0.956
0.551
0.901
3.818
1.665
1.217
1.05\
0.674
0.9ss
1.794
1.382
4.914
1.048
0.681
1.785
1.236
2.944
0.623
Al
A
AL
A
AL
A
A
A
A
A
Al
AL
AL
AL
A
AL
AL
Al
A
A
A
0,795
0.939
2.208
1,922
2.183
0.537
0.334
1.$Q7
0.333
0.264
A
AL
L
L
AL
A
A
A
AL
A
L
A
Al
A
3.00U
0.519
A
1.019
A
L
Al
2.8
45.2
—
0.978
0.346
2.014
—
1.957
2.120
1.278
1,370
1,477
0.780
2,894
2.244
1.S15
3.287
AL
AL
L
AL
L
AL
L
L
AL
AL
AL
L
L
fists in F@srea 1 and’2 makes it plain, I thhtk,
that neither can be satisfied by describingthem
as consisting mainly of ‘agriculturaljournals’.
F@re 1 shows us that among thejournals
ranked in order of importance to agriculture
At this point, I can make a statement that,
earlier in this presentation, might have seemed
so obvious as to be meaningless. An agricul.
tural library, or an agricultural
information
service, ought to be a science library or a
(whether or not one can cdl them ‘agricultural
scienceinformation service. It is the researchjoumafs’)
are-with
their ranks on the ers, not we librarians and information workers
list—A?ature(2),JouznalofBiologial Chenris- who determine
this. When their interests
try (4), Science(7), BibchemiealJournal(10), change, citation analysis can help us keep
BiochimicaBiophyai&iActs (14), Journal01 abreast of those changes.’
Bacteriology(20), CompteaRendus etc. (27),
1ss Figure 2 are the agricultural joumafs
An&ytical Chemist~ (30), Elxdogy (31), Ar. that most heavily cited the agricultural core.
chives of Bicwhemistryand Biophysics (32), For the most parG there will be little argument
Journalof Ci# Biology (36), Journalof the about their being ‘agricultural’ journals, but—I
are not the joumafs that
Amen”can Chemibrl .!lcwiety(37), and so on. must repeat-they
Undoubtedly there are journals on the list that
agricultural
researchers use mcst. They are,
rather, the written product of agricultural reare ‘agricultural’ by anyone’s definition, but
there are many more that very few people
search. Even among these top 75, however, it is
would characterise
as ‘agricultural’. The fist intereating to see that Skienceand Natureare
tells us, however, that they make up the Litera- better quafitied as ‘agricultural journals’ than
ture of interert to agncultuml research,the Phytomozpholo&y,the last on the fist, and
literature agricultural scientists use They are more qualified than the 320 other journals on
accordingly the journals that an ‘agricultural
the complete list of 395 that most heavily cited
library’ and an ‘agricultural information ser- the agriculture core.
vice’ will rred.
There are 43 joumafs common to the two
I regret that I can’t make the complete list lists of 75, but their rankings on the two lists
of cited items available for your inspection
differ considerably. The shared journals are
now. [t would dispel the illusion that strict
indicated by an asterisk after the journal title
‘agricultural selectivity’ after a point will take
abbreviation.
care of thk obvious dispersion of material imI should like to take this opportunity to
portant to agriculture. The full list shows that
say something ahout the coverage of Current
Contents/Lif2 Sciencese (CC/LS~ and r2srthat is definitely not the case. Before the illurent Contents/Agn’cultur~ Biology & En n:
sory ‘agricultural
tibrary’ can ‘select’ the
ronmental Sciencesa (c7C/AB&?E@. In the
Amen”csus
PotatoJoum&, for example, it must
figures, CC coverage is indicated by an A
pick up ProtopIasm&which the mre cited
more frequently. Before it ‘selects’ the Bcrkhte and/or L in the last column (for CC/AB&ES
der Deutsehen
Botani~hen
Geselischall it and CC/LS respectively). It’s frequently sugmust pick up Amen’canJoumaJofPhysiology. gested that a researcher should not have to
Before it ‘selects’ JoumaI of the Amen.can subscribe to more than one edition of CC .
researchers frequently say they
Society of Agronomists, it must pick up Jour- Agricultural
nal of Laboratoryand ClinicalMedicine Bio- would prefer to have all of what they need in
CCXZS or in CC/AB&ES I wish that were
chemistry,and Naturwissenaehaflen.
Before it
possible, just as I wish it were possible in the
‘selects’ flora, HiIgardia,Acts BWanibaNerlandiq it must pick up Journalof Immunolo- case of clinical researchers who say the same
gy, Journalof h.fokmdar Biology, Amen”can i thing in relation to CC/LS and CC/Clinial
Journalof Epidemiology, Zeitschn”l?fuer Na- Practicqor in the case of certain chemists who
tudorschung.Before it ‘selects’ JournalofHor- say the same thing in relation to CC/LS and
CC/Physical & ChemicalSciences Although
ticursdScience it must pick up Lancet and
JoumaIof Cellscience, and .IoumaIof General we have tried, and I think to a good extent
Physiology, In all these cases, if the illusory
succeeded, in making CC/LS serve the interlibrary ‘selects’ the obvious kgncultural’jour- =ts of as many different ‘specialists’ as possible, it’s coverage cannot be skewed to emphathat
nal, it will have selected journals
size some specialties’ interests at the expense of
citations—that
is,
that
agricultural
others. Coverage of the various editions of CC
research-have
shown are of lesser importance
is a difficult problem, and in many instances no
in agricultural
research
than
the nondoubt intution plays a role in journal selection,
agricultural journals I have named.
277
Chation anafysis, however, as I’ve indicated encea, and it providea the multidisciplinary
elsewhere,’ haa beers of great help in supplying
objective criteria. The paitive reaulta can be
demonstrated with these two short lists of 75
journals.
Of the 75 joumafs on the list in F@rre 1,
26 are covered
by both
CVZ.S
and
CC/A13&i?$ 26 are covered by CC/AB&EJ
slonq 22 are covered by CC/ZSalone,
and one
(Journal
ofAgricuhuraIResearch)
isno longer
published.
If the jourrtafs in F@rre I are rearranged
in order of the ~rcentage of ‘agricultural citations’ in tesmss of total citations (as in Figure 3),
you will find that there is first a group covered
exclusively by CC/ABd?~ then a group covered mainly by both cW-’LS and CC/AB&E$
and finally a group covered exclusively by
CC/H.
That is exactly as it should be, in my
opinion. If the joumafs in Figure 2 are rearranged in the same manner, however (as in
Figure 4), there is no such abrupt debarkation.
The doubly-covered joumafs merely tend to be
distributed throughout the second two-thirds
of the rearranged list.
We are frequently asked why we at 1S1 da
not produce ‘specialty’ citation indexes, of
greater or lesser scope-a
‘biochemical’ citation index, or a ‘{ifesciences’ citation index. We
could do SO, but I have no doubt at afl that
users would soon find them unsatisfactory.
Users of these hypothetical ‘specialty’ citation
indexes would soon find they need broader
coverage. The ‘biochernicaf’ citation index
would have to be enlarged, and would turn OU1
to be the ‘life sciences’ citation index. In time,
that ‘life sciences’ citation index would haw
again to be enlarged, and we would end with
what we have now—the Science Ch!ationIn
dex. The SCI reflects both the multidiscipli.
nary character of reacarch in the natural sci.
1.
Science Citation Index 1969 Guide & JoumaI
Lists. (Pti]lsdelphk: hrsitute for Scientific Inforrnstion, 1970), 106 p. — The subject cstegory list
of journal abbreviations appears on pages 6-10 of
the Guide.
2. Garfield E. lournal
citation
studies.
9.
Highly cited ~diatric journals and articles. Current
Conten@(C@No.
29, 17 July 1974, p. 5-9.
3. —.
Journal citation studies. 15. Cancer journals and articles. CC No. 42, 16 October 1974,
p. 5-12.
4. ---Cltstion analysis as a tool in journal evaluation. Science 178:47 1–79. 1972.
access to the literature of research, no matter
what the specialty starting point of the researcher. Thus, we cordd produce an A&%xd.
turd CYtation
Index,or at least produce a series
of volumes that would carry such a title. But if
we were to restrict it to ao-crdled agricultural
journals, users would quickly demand an enlargement
of coverage. ‘That enlargement
would result in the same Life Sciences citafi”on
Index in turn demanded by bicmhemista. And
the hypothetical Life Scrkrrces t3ation Index
would in turn inevitably become the Science
CitationIndex that is already available. These
facts are beyond dispute. They were among the
studies of the
early discoveries in my first
potential of citation indexing for science. I tried
to produce a GeneticsCitationIndex. Indeed, 1
still have a volume with that title,’ but the
attempt was a failure in that it fell short of the
intended goal. In a real sense, the Science
CitationIrrde,r
exists because it was impossible,
with anything but a Seltwce CitationIndex to
till the need for a Genetics Citation Index. The
same, I believe, is true in the case of a hypothetical Agneultuml CitationIndex. The only satisfactory A@”cultutzI Cttah”onIndex is a Science CStationIndex. Fortunately,
the Science
CZ?ation Index exists.
In short, agricultural acientista use and
cite the same hard core of frequently cited basic
research journals used by all other research
workers in the life sciences. Their purpose, the
slant of their intereat, their mission,if you will,
may differ, but the materials are the same.
Indeed the appellation agriculture describes
only the mik.sion,rather than any approach to
the problem with which agricultural scientists
deal. Thus, an agricultural research library is
by definition-as
our study, I believe, has
shown—a basic science research library.
s.
In the near future, we plan to update this
agricultural analysis with a study of 1972 data. I feel
contident that it will show some changea in agricultural research for that three-year period, and the
same will be true for 1972–1975.
6. Gariield E- Citation frequency and citation
impact, and the role they play in journal selection
for Cin-rerrtContents and other 1S1 services.
CC No. 6,7 February 1973, p. 5-6.
7. Genetics CitationIndex:E.rpen”mental
Citation
Indexes to Genetics withSpecialEmphasison Human Genetics. (Philadelpbir. Institute for Scientific
Information, 1963), 864 p.
278