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Bulletins and Articles Published by Bureau of Labor Statistics: A Selected List of References: Bulletin of the United States Bureau of Labor Statistics, No. 614

Elizabeth Agnes JohnsonUnited States. Bureau of Labor Statistics

出版	U.S. Government Printing Office, 1935
URL	http://books.google.com.hk/books?id=nxmSAQAACAAJ&hl=&source=gbs_api