TY - RPRT TI - Landscape consequences of natural gas extraction in Cameron, Clarion, Elk, Forest, Jefferson, McKean, Potter, and Warren Counties, Pennsylvania, 2004-2010 AU - L. E. Milheim AU - E. T. Slonecker AU - C. M. Roig-Silva AU - S. G. Winters AU - J. R. Ballew PY - 2014 DO - 10.3133/ofr20141152 UR - https://pubs.usgs.gov/publication/ofr20141152 ID - ofr20141152 ER -