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Anchorage Testing of Mine-roof Bolts
Anthony J. BarryLouis Anthony PanekJohn A. McCormick
其他書名
slotted-type bolts
出版U.S. Department of the Interior, Bureau of Mines, 1954
URLhttp://books.google.com.hk/books?id=Zn8LAf6xvdsC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN