Yazar
Gary Vocke
9 cilt bulundu.
Gary Vocke · ERS-NASS [distributor
69 sayfa · 1990
American Agricultural assistance / Congresses / American Economic assistance / International economic relations / International trade
James Langley, Gary Vocke · Iowa State Press
184 sayfa · 1994
Agriculture & related industries / Heady, Earl Orel, / Biography / Agricultural Economics / Biography / Autobiography
Earl Orel Heady, Gary Vocke · Iowa State University Press
275 sayfa · 1992
Soil conservation / Mathematical models / Agricultural conservation / Agricultural ecology
Gary Vocke · U.S. Dept. of Agriculture, Economic Research Service
12 sayfa · 1988
Grain / Imports / Statistics
Gary Vocke · U.S. Dept. of Agriculture, Economic Research Service, International Economics Division
19 sayfa · 1986
Agriculture and state / Green Revolution / Wheat trade
Gary Vocke · U.S. Department of Agriculture, Economic Research Service
Sayfa sayısı yok · 1987
Agricultural assistance
Gary Vocke · United States Department of Agriculture, Economic Research Service
24 sayfa · 2013
Wheat / Statistics / Yields / Climatic factors / Agricultural productivity
Gary Vocke · Center for Agricultural and Rural Development, Iowa State University
94 sayfa · 1977
Agriculture / Economic aspects / Fertilizers / Pesticides
Gary Vocke · Center for Agricultural and Rural Development, Iowa State University
59 sayfa · 1978
Beef cattle / Feeding and feeds / Field crops / Grain