Search Results - Spencer, Frank Darwyn, 1904-

Coal resources of Indiana / by Spencer, Frank Darwyn, 1904-

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Coal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld Counties, Colorado / by Spencer, Frank Darwyn, 1904-

Geology of the Pellville quadrangle, Kentucky / by Spencer, Frank Darwyn, 1904-

Geology of parts of the Rockport and Lewisport quadrangles, Kentucky / by Spencer, Frank Darwyn, 1904-

Coal resources of Indiana / by Spencer, Frank Darwyn, 1904-

Geologic map of the Louisville quadrangle, Boulder County, Colorado / by Spencer, Frank Darwyn, 1904-

Geology of the Tell City quadrangle, Kentucky-Indiana / by Spencer, Frank Darwyn, 1904-

Coal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld Counties, Colorado / by Spencer, Frank Darwyn, 1904-

Online Access
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Coal resources of Colorado / by Spencer, Frank Darwyn, 1904-

Coal resources of Colorado / by Spencer, Frank Darwyn, 1904-, Erwin, Margaret I.

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Geology of the Boltsfork quadrangle and part of the Burnaugh quadrangle, Kentucky /

Other Authors: “…Spencer, Frank Darwyn, 1904-…”

Geophysical and lithologic logs of nine test holes drilled during 1980 in the Como West, Elmo, and T.E. Ranch quadrangles, Carbon County, Wyoming by Hansen, Dan E.

Other Authors: “…Spencer, Frank Darwyn, 1904-…”

Geologic map of the Anawalt quadrangle, West Virginia-Virginia /

Other Authors: “…Spencer, Frank Darwyn, 1904-…”