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Abstract
A multicommodity, multiregional linear programming model is employed to obtain price
differentials between 16 U.S. regions for corn, barley, grain sorghum, and oats. The price
differentials are used to obtain loan support rates (for the 1974 crop) in each region, for
each grain, so that relative feeding values, transport rates, and supply and demand conditions
are an integral part of the loan rate structure.