Author: JOHNSON, R.F. ET AL.
Title: Geology and ore deposits of the Atacocha District, Dept. de Pasco, Peru.
Description: 1955. United States Geological Survey Bulletin 975-E; pp. 337-388, 8 fig./phot. 8 fold. plts. in pocket. Orig. wrps. libr. sticker taped to corner of front cover.

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