Author
United States. Department of Agriculture
260
Philadelphia Society for Promoting Agriculture Collection (University of Pennsylvania)
245
Food and Agriculture Organization of the United Nations
186
SpringerLink (Online service)
178
e-libro, Corp
175
International Service for National Agricultural Research
104
ProQuest Ebook Subscriptions
95
United States. Department of Agriculture. Economic Research Service
95
American Society of Agronomy
88
ProQuest (Firm)
88
Board of Agriculture (Great Britain)
85
National Agricultural Library (U.S.)
75
United States. Office of Experiment Stations
72
Young, Arthur, 1741-1820
62
United States. Agricultural Research Service
61
Sparks, Donald L., 1953-
54
World Bank
50
New Jersey Agricultural Experiment Station
46
Making of the Modern World
42
Markham, Gervase, 1568?-1637
41
Sparks, Donald L.
41
Organisation for Economic Co-operation and Development
40
Early English Books Online
39
Indian Council of Agricultural Research
35
Idaho Agricultural Experiment Station
34
Pennsylvania. Department of Agriculture
32
Li, Daoliang
30
Arkansas Agricultural Experiment Station
28
International Development Research Centre (Canada)
28
United States. Bureau of the Census
28
Brady, Nyle C.
27
New Jersey. Department of Agriculture
27
Nuttonson, M. Y. (Michael Y.), 1904-
27
American Institute of Crop Ecology
26
Cobbett, William, 1763-1835
25
Great Britain. Board of Agriculture
25
JSTOR
25
Marshall, Mr. (William), 1745-1818
25
Sabin Americana, 1500-1926
25
United States. Agency for International Development
25
United States. Cooperative State Research Service
25
Bailey, L. H. (Liberty Hyde), 1858-1954
23
United States. Congress. Office of Technology Assessment
23
United States. Department of Agriculture. Statistical Reporting Service
23
Janick, Jules, 1931-
22
PALCI EBSCO books
22
Philadelphia Society for Promoting Agriculture
22
United Nations Development Programme
22
United States. Bureau of Agricultural Economics
22
Cornell University. Agricultural Experiment Station
21
more ...