Geological Map of the Clear Lake District.

Geological Map of the Clear Lake District. U.S. Geological Survey. Monograph XIII, Atlas Sheet III. Topography compiled by C.F. Hoffmann. Giles Litho. & Liberty Printing Co. Geo. F. Becker, Geologist in charge.

Becker, George F.

1887

1887

United States Geological Survey

1:95 000

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