Pope, C. A., Heady, E. O., & Bhilde, S. (1982). The economics of soil and water conservation practises in Iowa: Model and data documentation. Ames, IA.: Center for Agricultural and Rural Development, Iowa State University.
Παραπομπή Chicago StylePope, C. Arden, Earl Orel Heady, and Shashanka Bhilde. The Economics of Soil and Water Conservation Practises in Iowa: Model and Data Documentation. Ames, IA.: Center for Agricultural and Rural Development, Iowa State University, 1982.
Παραπομπή MLAPope, C. Arden, Earl Orel Heady, and Shashanka Bhilde. The Economics of Soil and Water Conservation Practises in Iowa: Model and Data Documentation. Ames, IA.: Center for Agricultural and Rural Development, Iowa State University, 1982.
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