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	1.	Economic use of forages in livestock production on Corn Belt farms / by Russell O. Olson and Earl O. Heady. by Olson, Russell O. (Russell Oscar), 1917- Heady, Earl Orel, 1916- Series: Circular (United States. Department of Agriculture) ; no. 905. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, D.C. : U.S. Dept. of Agriculture, 1952 Availability: No items available. Add to cart (remove)
	2.	Interregional adjustments in crop and livestock production; a linear programming analysis, by Ray F. Brokken and Earl O. Heady. by Brokken, Ray F Heady, Earl Orel, 1916- [joint author.] Iowa State University. Center for Agricultural and Economic Development Series: Technical bulletin (United States. Department of Agriculture) ; no. 1396. Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Washington] Economic Research Service, U.S. Dept. of Agriculture, 1968 Availability: No items available. Add to cart (remove)

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