Preliminary geologic map of the Panamint Butte quadrangle, Inyo County, California
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Miscellaneous Field Studies Map↗
Geology topics
H.G. Stephens
Publications and source records attributed to H.G. Stephens.
Claim map, Bull Canyon quadrangle, Montrose and San Miguel Counties, Colorado
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Open-File Report↗
Geology and beryl deposits of the Peerless pegmatite, Pennington County, South Dakota
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Professional Paper↗