Christensen, D. A. (1981). The potential effect of increased water prices on U.S. agriculture. Ames: Center for Agricultural and Rural Development. Iowa State University.
Παραπομπή Chicago StyleChristensen, Douglas A. The Potential Effect of Increased Water Prices On U.S. Agriculture. Ames: Center for Agricultural and Rural Development. Iowa State University, 1981.
Παραπομπή MLAChristensen, Douglas A. The Potential Effect of Increased Water Prices On U.S. Agriculture. Ames: Center for Agricultural and Rural Development. Iowa State University, 1981.
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