@misc{indiciae11a0b88141f6,
  title = {Aeromagnetic map of the Hackettstown quadrangle and part of the Chester quadrangle, Hunterdon, Morris, and Warren Counties, New Jersey},
  author = {G. E. Andreasen and J. R. Henderson and E. J. Chandler},
  year = {1963},
  doi = {10.3133/gp348},
  url = {https://pubs.usgs.gov/publication/gp348},
  note = {Source identifier: gp348}
}