Author
United States Bureau of the Census
117
Cheney, Ian
16
Ellis, Curt
16
Independent Television Service
16
Mosaic Films
16
Woolf, Aaron
16
Iowa Agriculture and Home Economics Experiment Station
15
Iowa State College Agricultural and Home Economics Experiment Station
14
Bullfrog Films
13
Iowa State College Agricultural Experiment Station
13
Iowa Department of Agriculture
11
Iowa State University Cooperative Extension Service
11
Iowa Agricultural Experiment Station
9
Miller, Jeffrey K.
8
Wicked Delicate Films
8
Balcony Releasing
7
United States Bureau of Agricultural Economics
7
Colman, Gould P (Gould Patchin), 1926-
6
Iowa Crop and Livestock Reporting Service
6
Iowa State College
6
Iowa State College Cooperative Extension Service
6
Miller, Jeffrey K
6
Heady, Earl O (Earl Orel), 1916-1986
5
Iowa Dept. of Agriculture
5
Iowa State Agricultural Society
5
Iowa State University
5
United States Congress. Senate. Committee on Agriculture, Nutrition, and Forestry
5
United States Department of Agriculture
5
WoWz (Musical group)
5
Bell, Michael, 1957-
4
Bogue, Allan G
4
Chakedis, Spencer
4
Corporation for Public Broadcasting
4
Iowa Agricultural Statistics
4
Iowa State College Center for Agricultural Adjustment
4
Iowa State University Agricultural and Home Economics Experiment Station
4
Miner, Horace (Horace Mitchell), 1912-1993
4
Ossian, Lisa L., 1962-
4
Ramsey, Bo
4
United States National Agricultural Statistics Service
4
Ascher, Steven
3
Friedberger, Mark
3
Genius Products, Inc
3
Henry A. Wallace Institute of Alternative Agriculture
3
Iowa State College Agricultural Extension Service
3
Iowa State College Experiment Station
3
Iowa State College Extension Service
3
Iowa Weather and crop service
3
Jordan, Jeanne
3
Mirowitz, Sheldon
3
more ...