Nature and Origin of Deposits of Phosphate of Lime, Bulletin 46

by R. A. F. Penrose Jr.

$20 · Offered by Crossroads Books

Washington, D.C. Government Printing Office, 1888. green boards, gilt lettering on spine, 143 pages, 579-580 pages bent at bottom, indexed. The circumstances which have led to the preparation of the subjoined report on mineral phosphates are as follows, viz: In 1870 the present writer was employed by the Superintendent of..... More

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