Bergsten, J. M. (1961). Oil and gas field atlas of the Foxburg quadrangle, Pennsylvania. Harrisburg, Pa.: Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey.
Chicago Style CitationBergsten, John M. Oil and Gas Field Atlas of the Foxburg Quadrangle, Pennsylvania. Harrisburg, Pa.: Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1961.
MLA CitationBergsten, John M. Oil and Gas Field Atlas of the Foxburg Quadrangle, Pennsylvania. Harrisburg, Pa.: Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1961.