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A History of the Water Resources Division, U.S. Geological Survey
Hugh H. HudsonJoseph Samuel Cragwall
其他書名
May 1, 1957 to June 30, 1966 : the years of change
出版U.S. Government Printing Office, 1996
URLhttp://books.google.com.hk/books?id=grYtjOrxSBgC&hl=&source=gbs_api
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