Geologic map of the Denver 1 degree by 2 degrees Quadrangle, north-central Colorado
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IMAP↗
Geology topics
L.W. McGrew
Publications and source records attributed to L.W. McGrew.
Preliminary geologic map of the Denver 1? by 2? Quadrangle, north-central Colorado
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Open-File Report↗
Geologic map of the Newcastle 1 degree by 2 degrees Quadrangle, northeastern Wyoming and western South Dakota
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Miscellaneous Field Studies Map↗
Geologic map of the Black Butte Mountain Quadrangle, Meagher County, Montana
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Open-File Report↗
Geologic map of the Ringling Quadrangle, Meagher County, Montana
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Open-File Report↗