Geologic and Grade-tonnage Information on Tertiary Epithermal Precious- and Base-metal Vein Districts Associated With Volcanic RocksGeologic and Grade-tonnage Information on Tertiary Epithermal Precious- and Base-metal Vein Districts Associated With Volcanic Rocks
[Washington, D.C.] : U.S. G.P.O. ; Alexandria, VA : [Print copy] for sale by the Distribution Branch, Text Products Section, U.S. Geological Survey, 1986.
From the community