Supply equations for five output groups and demand equations for four input groups in ten regions of the United States are estimated and evaluated. The econometric estimation is conducted for complete regional product supply and input demand systems subject to competitive theory. The results document the extreme diversity of production relationships within the United States. They clearly indicate the unequal effects of changes in economic conditions and government policies on major production regions.
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Shumway et al. (1988) studied this question.
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