Guidebook to the geology about Pittsburgh, by Henry Leighton.
Material type:
TextSeries: Bulletin G ; 17Publication details: Harrisburg, Pa., Department of internal affairs, Topographic and geologic survey, 1939.Description: 35 p. illus., map, tables. 23 cmSubject(s): LOC classification: - QE158.P55 L42
At head of title: Pennsylvania Geological survey, Fourth series.
On cover: Commonwealth of Pennsylvania. Department of internal affairs.
"Selected bibliography": p. 34-35.
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