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1.
Origin of the copper deposits of the Ducktown type in the southern Appalachian region / by Clarence S. Ross. by Series: Geological Survey professional paper ; no. 179.
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington : U.S. Gov't. Print. Off., 1935
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2.
Occurrence and origin of the titanium deposits of Nelson and Amherst counties, Virginia, by Clarence S. Ross. by
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, U.S. Govt. Print. Off., 1941
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