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Borehole Deformation Gage for Determining the Stress in Mine Rock
Leonard ObertRobert H. MerrillThomas A. Morgan
出版U.S. Department of the Interior, Bureau of Mines, 1962
URLhttp://books.google.com.hk/books?id=h-npoFcSQ6kC&hl=&source=gbs_api
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