agricultural research Kitapları
Bu türde 9 kitap
ESCOP; its history and influence on agricultural research preliminary draft for review by ESCOP, covering the period, 1905-42
Harold Carl Knoblauch
Survey on attitudes of research personnel
United States. Agricultural Research Service
A summary of agricultural communications research at State agricultural experiment stations
United States. Agricultural Research Service. State Experiment Stations Division
Comments on Report of the Committee of federal-state relationships in agricultural research (Report adopted November 17,1931, and submitted to U.S.D.A. by Executive committee on the Association of land grant colleges and universities)
United States. Department of Agriculture. National Agricultural Library.
Research for better crop production
United States. Bureau of Plant Industry, Soils, and Agricultural Engineering
A research perspective
United States. Department of Agriculture. Natural Resource Economics Division
Scientific work of the Department in its relations to practical agriculture
Edwin Willitts
Beltsville Agricultural Research Center
H. Bowers
Vseukrainskai͡a set' nabli͡udatel'nykh punktov; instrukst͡sii po organizat͡sii nabli͡udeniı̆ i uchetov bolezneı̆ polevykh i ogorodnykh kul'tur
T. D. Strakhov