Issues in world agriculture : a U.S. perspective - Mellor, John W.
51-30
Sobretirode : Hildreth, R. J., ed. Agriculture and rural areas approaching the twenty-first century; challenges for agricultural economies -- [s.l.]: Iowa State University, 1968. pp. 158-167
BATCH-UPD
CONVERSION
Keywords: Agricultura -- E.U.A.; Agricultura -- E.U.A.