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March 14 and 15, 1972, iv, 509-925 pp

United States. Congress. Senate. Committee on Labor and Public Welfare. Subcommittee on Employment, Manpower, and Poverty

出版	U.S. Government Printing Office, 1972
URL	http://books.google.com.hk/books?id=cL9FAQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN