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Abstract Currently Unavailable.

Economists have long puzzled over the fact that large firms pay higher wages than small firms, even after controlling for worker’s observed productive characteristics. One possible explanation has been that firm size is correlated with unobserved productive attributes which confound firm...

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Demand for nonsolar energy and concern about the implications of fossil fuel combustion have encouraged examination of energy use associated with agriculture. The United States is a global leader in pig production, and the United States swine industry is centered in Iowa. Feed is the largest...