登入選單
返回Google圖書搜尋
Annual Report on the Geological Exploration of the State of Pennsylvania
Geological Survey of PennsylvaniaHenry Darwin Rogers
出版The Survey, 1838
URLhttp://books.google.com.hk/books?id=DZ44AQAAMAAJ&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN