Geologic and coal-bed map of Clarion County, Pennsylvania
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IMAP↗
Geology topics
J. A. Van Lieu
Publications and source records attributed to J. A. Van Lieu.
Coal resources of Butler County, Pennsylvania
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Bulletin↗
Geologic map of the Four Corners quadrangle, Wyoming and South Dakota
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IMAP↗
Paleozoic formations in the Wind River Basin, Wyoming
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Professional Paper↗
Coal resources of Lawrence County, Pennsylvania
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Bulletin↗
Geologic map of Butler County, Pennsylvania
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Open-File Report↗