The Effects of Supplemental Income and Labor Productivity on Metropolitan Labor Cast Differentials
利用美国20个最大都市区数据，研究补充收入与劳动生产率如何共同影响制造业劳动力成本的地区差异。
A discussion of the effects that the combination of supplemental income and labor productivity have on the measurement of metropolitan labor-cost differentials in manufacturing, using data from the 20 largest SMSAs.