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Report ... July 1, 1912-December 15, 1913.

By Pennsylvania..
Harrisburg, C. E. Aughinbaugh, printer to the state of Pennsylvania, 1913 .
2 v. , 1913 has title: Final report ... Juanuary 1 to December 15, 1913 ... Harrisburg, Pa., W. S. Ray, state printer, 1914. 23 cm..

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Geology of the oil and gas fields in Sewickley quadrangle,

By Munn, Malcolm John,.
Harrisburg, C. E. Aughinbaugh, printer to the stae of Pennsylvania, 1910 .
172 p. . pl. (part fold., incl. maps) fold. tab. , "Introduction, by I. C. White": p. 13-23. 24 cm..

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Geology of the oil and gas fields of the Clarion quadrangle,

By Munn, Malcolm John,.
Harrisburg, C. E. Aughinbaugh, 1910 .
112 p. 24 cm..

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Preliminary report on the talc and serpentine of Northampton County and the Portland cement materials of the Lehigh District,

By Peck, Frederick Buritt,.
Harrisburg, C. E. Aughinbaugh, 1911 .
66 p. 24 cm..

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