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Start Over Author Smith, Robert W. Subject Mineral industries Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Mineral industry map of Ohio, 1956

Maps The Ohio State University Public content
1957. Smith, Robert W. Base map by U.S. Geological Survey. compiled by Robert W. Smith. Scale 1:500,000 ; Lambert conformal conic projection. Ohio. Division of Geological Survey.

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