@misc{indiciaeab9133ee27cf, title = {Surface geophysics and porewater evaluation at the Lower Darby Creek Area Superfund Site, Philadelphia, Pennsylvania, 2013}, author = {Charles W. Walker and James R. Degnan and Michael J. Brayton and Roberto M. Cruz and Michelle M. Lorah}, year = {2015}, doi = {10.3133/ds927}, url = {https://pubs.usgs.gov/publication/ds927}, note = {Source identifier: ds927} }