返回Google圖書搜尋

Churn Drilling at Cape Mountain Tin Placer Deposits Seward Peninsula, Alaska

出版	U.S. Department of the Interior, Bureau of Mines, 1948
URL	http://books.google.com.hk/books?id=GRGggRgJVWAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN