@misc{indiciae88068f396cf7,
  title = {Altitude and configuration of the potentiometric surface in Lansdale and vicinity, Montgomery County, Pennsylvania, August 22-23, 1996},
  author = {Lisa A. Senior and Cynthia J. Rowland and David A. Prieto},
  year = {1998},
  doi = {10.3133/ofr98253},
  url = {https://pubs.usgs.gov/publication/ofr98253},
  note = {Source identifier: ofr98253}
}