01042cam a22002651 4500 gs 11000345 DLC 20260227111311.0 790329s1910 paubf s001 0 eng c gs 11000345 (OCoLC)4797749 U.S. Geol. Survey Library NcRS NcRS OCoLC DLC premarc n-us-pa GA61.P4 A5 no. 3 Munn, Malcolm John, 1874- Geology of the oil and gas fields of the Clarion quadrangle, by M. J. Munn. Surveyed in cooperation with the United States Geological Survey. Harrisburg, C. E. Aughinbaugh, 1910. 112 p. 9 (i.e. 10) plates (part fold., incl. maps) 24 cm. Pennsylvania. Bureau of Topographic and Geologic Survey Report no. 3 Petroleum Geology Pennsylvania Clarion quadrangle. Petroleum Pennsylvania Clarion quadrangle. Natural gas Pennsylvania Clarion quadrangle. Geological Survey (U.S.) 25045 25045