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Employment Outlook in Petroleum Production and Refining: Bulletin of the United States Bureau of Labor Statistics, No. 994

Sol SwerdloffUnited States. Bureau of Labor StatisticsUnited States. Veterans AdministrationCalman Robert Winegarden

出版	Unspecified, 1950
URL	http://books.google.com.hk/books?id=5QySAQAACAAJ&hl=&source=gbs_api