细化搜索
结果 1-10 的 19
Agricultural production in New York, 1866 to 1940
1941
La Mont, T. E.
A revolution in the production costs of agricultural products has begun
1941
Agricultural production in Northern Colorado Water Conservancy District as related to national defense
1941
Dyer, E. Herbert | Barkley, Robert (J Robert)
Barley production in Texas
1941
Atkins, Irvin Milburn | Dunkle, P. B. (Paul Burtch)
Soybean production in Iowa
1941
Dyas, E. S.
"Soybeans have become a major crop in Iowa. They are well adapted to Iowa's climate and to general growing on the level Iowa soils where erosion is not a problem. The crop has more uses than most crops, both on the farm and in industry. Soybeans were first grown in Iowa for the home production of high-protein seed and hay. The seed has been used to substitute for purchased high-protein concentrates and the hay where legume hay is needed in the ration. More than half of the acreage has been harvested as hay. During the 10 years, 1929-1938, 64.5 percent has been harvested as hay, 30.5 percent for beans and the remaining 6 percent plowed under or grazed."--Page [35].
显示更多 [+] 显示较少 [-]Wheat production in California
1941
Suneson, Coit A. | Briggs, Fred N.
Wheat production in Oklahoma, 1894-1938
1941
Blood, K. D. | Hill, Marjorie Lee
Jackstock production in Mississippi
1941
Means, Ray H (Ray Herbert)
Papaya production in the Hawaiian islands
1941
Jones, Winston W. (Winston William)
Bromegrass production in Nebraska
1941
Frolik, Anton Lawrence | Newell, L. C. (Lawrence Cutler)
