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Author
Schwartz, George M.
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Author
Prokopovich, N.
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Public
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Subject
Geoscientific Information
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Minnesota
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1. Map of mineral resources of Minnesota, 1954
1954. Schwartz, George M. and Prokopovich, N. Mineral resources map of Minnesota, scale 1:1,000,000.
2. Map of mineral resources of Minnesota, 1956
1956. Schwartz, George M. and Prokopovich, N. Mineral resources map of Minnesota, scale 1:1,000,000.
3. Map of mineral resources of Minnesota, 1966 (revised from 1956 edition)
1966. Schwartz, George M. and Prokopovich, N. Mineral resources map of Minnesota, scale 1:1,000,000.