Author
California Farm Bureau Federation
100
Colorado Agricultural College. Extension Service
58
Université de Paris
54
Justus Liebig-Universität Giessen
50
India. Directorate of Economics and Statistics
39
Indian Council of Agricultural Research
39
Universität Zürich
31
United States. National Archives and Records Service
30
Universität Leipzig (1409-1953)
26
Universität Jena
23
Universität Halle-Wittenberg
22
Colorado A & M College. Extension Service
21
Universität Bonn
21
Gregory, R. W. (Raymond William), b. 1893
20
Hawaii Agricultural Experiment Station
19
Davis, Kary Cadmus, 1867-1936
18
Indonesia. Biro Pusat Statistik
18
United States. Department of Agriculture
18
Ohio Agricultural Experiment Station
17
Universität Göttingen
17
Colorado State College (Fort Collins, Colo.). Extension Service
16
Friedrich-Wilhelms-Universität Berlin
16
Indonesia. Departemen Pertanian
16
South Dakota Agricultural Experiment Station
16
University of Hawaii (Honolulu). Agricultural Extension Service
16
Agro-Economic Research Centre (Simla, India)
15
Landbouwhogeschool Wageningen
14
Proyek Penyempurnaan dan Pengembangan Statistik Pertanian Tanaman Pangan (Indonesia)
13
Russian S.F.S.R. Ministerstvo selʹskogo khoz︠i︡aĭstva
13
Institut ėkonomiki (Akademi︠i︡a nauk SSSR)
12
Iowa Agriculture and Home Economics Experiment Station
12
Landbouwuniversiteit Wageningen
12
North Carolina. Dept. of Agriculture
12
United States. Bureau of Agricultural Economics
12
Universität Bern
12
Universität zu Köln
12
Brazil. Serviço de Inspeção e Defesa Agrícolas
11
Faculté de droit de Paris
11
Iowa State University. Cooperative Extension Service
11
United States. Census Office
11
Universität Heidelberg
11
Vseso︠i︡uzna︠i︡a akademi︠i︡a selʹskokhoz︠i︡aĭstvennykh nauk imeni V.I. Lenina
11
Brazil. Ministério da Agricultura, Indústria e Comércio
10
Eidgenössische Technische Hochschule Zürich
10
Japan. Nōrinshō. Nōrin Keizaikyoku. Tōkei Chōsabu
10
United States. Census Office. 6th Census, 1840
10
Albertus-Universität zu Königsberg i. Pr
9
Germany (West). Bundesministerium für Ernährung, Landwirtschaft und Forsten
9
Indonesia. Direktorat Bina Program Tanaman Pangan
9
Indonesia. Kantor Statistik Provinsi Kalimantan Tengah
9
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