LOCATION OF PRODUCTION AND ENDOGENOUS WATER QUALITY REGULATION: A LOOK AT THE U.S. HOG INDUSTRY
研究美国各州水质监管对生猪生产区位的影响，利用1994和1998年各州水质立法构建定性指标，发现监管加严并未损害生猪生产。
This paper examines the effect of state regulation of water quality on the location of hog production across states in the US. A qualitative measure is developed from states' water quality legislation in 1994 and 1998. No evidence is found that increased stringency is detrimental to hog production.