Geologic map of the Anawalt quadrangle, West Virginia-Virginia
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Virginia, West Virginia↗
Geology topics
Frank Darwyn Spencer
Publications and source records attributed to Frank Darwyn Spencer.
Coal geology and coal, oil, and gas resources of the Erie and Frederick quadrangles, Boulder and Weld counties, Colorado
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Bulletin↗
Geophysical and lithologic logs of six test holes drilled during 1979 in the Como West and Elmo quadrangles, Carbon County, Wyoming
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Open-File Report↗
Geology of parts of the Rockport and Lewisport quadrangles, Kentucky
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Geologic Quadrangle↗
Geology of the Boltsfork quadrangle and part of the Burnaugh quadrangle, Kentucky
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Geologic Quadrangle↗
Geology of the Tell City quadrangle, Kentucky-Indiana
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Geologic Quadrangle↗
Geology of the Pellville quadrangle, Kentucky
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Geologic Quadrangle↗
Bedrock geology of the Louisville quadrangle, Colorado
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Geologic Quadrangle↗