Author: JOHNSON, ROBERT F; LEWIS, RICHARD W; ABELE, GUILLERMO.
Title: Geology and Ore Deposits of the Atacocha District Departamento de Pasco Peru. Geological Survey Bulletin 975-E.
Description: First Edition; Demy 8vo; pp. iv, 337-388, v; text illustrated with 8 figures, 8 folding maps in pocket on rear wrapper, literature cited, index, bound in original stiff printed stapled wrappers, very good copy. Washington; United States Government Printing Office; 1955.

Keywords: mining south america geology history