Oil and gas resources of U.S. Naval Oil Shale Reserves 1 and 3, Colorado, and Reserve 2, Utah
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Open-File Report↗
Geology topics
W. C. Butler
Publications and source records attributed to W. C. Butler.
A suggested rationale and selected bibliography for using rule-based expert computer systems (artificial intelligence) in recurrent petroleum resource assessments
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Open-File Report↗
Metallic mineral and mineral-fuel resource potential map of Arizona showing major mineral deposits
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Mineral Investigations Resource Map↗