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Google圖書搜尋
Phosphate-rock Resources of the United States
James Bachelder Cathcart
Richard Porter Sheldon
Robert A. Gulbrandsen
出版
Geological Survey
, 1984
URL
http://books.google.com.hk/books?id=Kpr8XLO0BVEC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
An analysis of phosphate-rock resources, based on past estimates and all available recent information, indicates that sufficient phosphate exists in the United States to meet domestic demands for the foreseeable future.
