Economic geology of the Beaver Quadrangle, Pennsylvania (southern Beaver and northwestern Allegheny counties) by Lester H. Woolsey.
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TextPublication details: Washington : Govt. print. off., 1906.Description: vi, 132, vi p. : ill., viii pl. (part fold., incl. map in pocket) diagrs. ; 24 cmSubject(s): LOC classification: - QE75 .B9 no.286
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Subject series : A. Economic geology, 74. B. Descriptive geology, 93.
Issued also as House doc. no. 834, 59th Cong., 2d session.
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