@misc{indiciae380e4c72723a,
  title = {A model of late quaternary landscape development in the Delaware Valley, New Jersey and Pennsylvania},
  author = {J.C. Ridge and E.B. Evenson and W. D. Sevon},
  year = {1992},
  doi = {10.1016/0169-555x(92)90027-l},
  url = {https://pubs.usgs.gov/publication/70017256},
  note = {Source identifier: 70017256}
}