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The Fluorspar Deposits of the Republics of South Africa and Bophuthatswana
I. T. Crocker
J. E. J. Martini
A. P. G. Söhnge
出版
Republic of South Africa, Department of Mineral and Energy Affairs
, 1988
ISBN
062111815X
9780621118155
URL
http://books.google.com.hk/books?id=rc5PAQAAIAAJ&hl=&source=gbs_api