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Farm labor in the United States
Bishop, Charles Edwin, (1967)
Agricultural output and productivity in Eastern Europe and some comparisons with the U. S. S. R. and U. S. A.
Lazarcik, Gregor, (1974)
Technology transfer, institutional transfer, and induced technical and institutional change agricultural development
Ruttan, Vernon W., (1975)
Supervised agricultural, credit in Peru : technique adoption, productivity, and loan delinquency in Plan Costa
Finn, Michael George, (1973)