Specialization and pork production methods in relation to overall farm resource
Heady, E.O.
Specialization and pork production methods in relation to overall farm resource - Ames 1961 - 211-236 p. - Iowa Agricultural Experiment S .
Specialization and pork production methods in relation to overall farm resource - Ames 1961 - 211-236 p. - Iowa Agricultural Experiment S .