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You searched for: Author Feltis, R. D. (Richard D.), 1930- Remove constraint Author: Feltis, R. D. (Richard D.), 1930- Subject Geology, Structural Remove constraint Subject: Geology, Structural Place Billings Region Remove constraint Place: Billings Region Data type Mixed Remove constraint Data type: Mixed
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1. Map showing configuration of the top of the Madison Group, Billings 1-degree by 2-degree quadrangle, Montana

Feltis, R. D. (Richard D.), 1930-. Montana Bureau of Mines and Geology,.