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Efficient Employment of Cohorts of Labor in the U. S. Economy

Anthony E. BoardmanS. MillerArie P. Schinnar

出版	School of Public and Urban Policy, Fels Center of Government, Government Study Center, University of Pennsylvania, 1978
URL	http://books.google.com.hk/books?id=T2mwGwAACAAJ&hl=&source=gbs_api