Drabenstott, M. R., & Heady, E. O. (1980). Small family farms in American agriculture: Projected incomes for north central Iowa small farms. Ames, Iowa: Center for Agricultural and Rural Development, Iowa State University.
Παραπομπή Chicago StyleDrabenstott, Mark R., and Earl Orel Heady. Small Family Farms in American Agriculture: Projected Incomes for North Central Iowa Small Farms. Ames, Iowa: Center for Agricultural and Rural Development, Iowa State University, 1980.
Παραπομπή MLADrabenstott, Mark R., and Earl Orel Heady. Small Family Farms in American Agriculture: Projected Incomes for North Central Iowa Small Farms. Ames, Iowa: Center for Agricultural and Rural Development, Iowa State University, 1980.
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