@misc{indiciaeb06d7a760733,
  title = {Altitude and configuration of the potentiometric surface in Warwick Township, Bucks County, Pennsylvania, September 1994 through May 1995},
  author = {C.J. Rowland},
  year = {1997},
  doi = {10.3133/ofr97554},
  url = {https://pubs.usgs.gov/publication/ofr97554},
  note = {Source identifier: ofr97554}
}