Olson, K. D. (1977). Estimated impacts of two environmental alternatives in agriculture: A quadratic programming analysis. Ames, Iowa: Center for Agricultural and Rural Development. Iowa State University.
Παραπομπή Chicago StyleOlson, Kent D. Estimated Impacts of Two Environmental Alternatives in Agriculture: A Quadratic Programming Analysis. Ames, Iowa: Center for Agricultural and Rural Development. Iowa State University, 1977.
Παραπομπή MLAOlson, Kent D. Estimated Impacts of Two Environmental Alternatives in Agriculture: A Quadratic Programming Analysis. Ames, Iowa: Center for Agricultural and Rural Development. Iowa State University, 1977.
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