@misc{indiciae656315e0867c,
  title = {Landslide susceptibility and land modified by man map of part of the Clinton 7 1/2-minute Quadrangle, Allegheny County and vicinity, Pennsylvania},
  author = {J. S. Pomeroy},
  year = {1974},
  doi = {10.3133/ofr74234},
  url = {https://pubs.usgs.gov/publication/ofr74234},
  note = {Source identifier: ofr74234}
}