@misc{indiciae519138b7348a, title = {Preliminary geologic framework developed for a proposed environmental monitoring study of a deep, unconventional Marcellus Shale drill site, Washington County, Pennsylvania}, author = {Robert G. Stamm}, year = {2018}, doi = {10.3133/ofr20181057}, url = {https://pubs.usgs.gov/publication/ofr20181057}, note = {Source identifier: ofr20181057} }