New Methods of Ore Concentration and Gold Amalgamation Comprising Paddock's Air Separator and Peck's Machine Gold Pan.

John A. Church, E.M., Ph.D.

Published by Printed for the author, 1879
Condition: Used - Good Soft cover

Sold by JF Ptak Science Books, Hendersonville, NC, U.S.A.

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Used - Soft cover

Condition: Used - Good

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