Minerals of Pennsylvania, by Amos P. Brown and Frederick Ehrenfeld.
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TextSeries: Pennsylvania. Topographic and Geologic Survey. Report ; no. 9Publication details: Harrisburg, Pa., W. S. Ray, 1913.Description: 160 p. plates, maps (part fold.) 24 cmSubject(s): LOC classification: - GA61.P4 A5 no. 9
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