Linear programming methods /

por Heady, Earl Orel, 1915
Publicado 1969

Roots of the farm problem : changing technology, changing capital use, changing labor needs /

por Heady, Earl Orel, 1915-
Publicado 1965

Future farm programs

por Heady, Earl Orel, 1915-
Publicado 1972

Economic models and quantitative methods for decisions and planning in agriculture : proceedings of an East-West seminar /

Publicado 1971

Methodological procedures in the economic analysis of fertilizer use data /

por Baum, Emanuel L
Publicado 1956

Contabilidad y control de explotaciones agrícolas /

por Hopkins, John Abel, 1897-
Publicado 1964