Preliminary report on the talc and serpentine of Northampton County and the Portland cement materials of the Lehigh District, by Frederick B. Peck.
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TextPublication details: Harrisburg, C. E. Aughinbaugh, 1911.Description: 66 p. plates, maps (1 fold. in pocket) 24 cmSubject(s): LOC classification: - GA61.P4 A5 no. 5
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