登入選單

返回Google圖書搜尋

Determining the In-place Support of Mine Roof with Rock Bolts, White Pine Copper Mine, Michigan

Robert H. MerrillThomas A. MorganC. J. Stehlik

出版	U.S. Department of the Interior, Bureau of Mines, 1961
URL	http://books.google.com.hk/books?id=dB6JHVeOR_0C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN