登入選單
返回Google圖書搜尋
Inverted Pyramid-shaped Plugs for Closing Abandoned Mine Shafts
Waldemar M. DresselJohn S. Volosin
其他書名
Galena, KS, Demonstration Project
出版U.S. Department of the Interior, Bureau of Mines, 1985
URLhttp://books.google.com.hk/books?id=FimlY4aOCo4C&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN