The
minerals of Pennsylvania: Non-metallic minerals
Non-metallic minerals--Pennsylvania
Stone, Ralph W. (Ralph Walter)
1876-1964
creator
text
bibliography
pau
Harrisburg, Pa
Department of Internal Affairs, Topographic and Geologic Survey
1939
monographic
eng
50 p. incl. illus. (map) tables. 23 cm.
by R. W. Stone.
At head of title: Pennsylvania Geological survey, Fourth series
With Ashley, G. H. The undeveloped mineral resources of Pennsylvania. 1933. (Bulletin M18-A)
Bibliographical footnotes.
Mines and mineral resources
Pennsylvania
TN24.P4 A7
Bulletin M, 18-C
gs 40000143
U.S. Geol. survey. Library
780829
20260227111345.0
gs 40000143