Geologic map of the North Keystone mine, Copperopolis, California

G.R. Heyl; J. B. Hadley; G.L. Quick

doi:10.3133/ofr4341

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Geologic map of the North Keystone mine, Copperopolis, California

Open-File Report 43-41

By: G.R. Heyl, J. B. Hadley, and G.L. Quick

https://doi.org/10.3133/ofr4341

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Abstract

Additional publication details
Publication type	Report
Publication Subtype	USGS Numbered Series
Title	Geologic map of the North Keystone mine, Copperopolis, California
Series title	Open-File Report
Series number	43-41
DOI	10.3133/ofr4341
Year Published	1943
Language	ENGLISH
Description	1 map