@misc{indiciae9f6b51db80f1,
  title = {Map showing unconsolidated materials, Northfield quadrangle, Massachusetts-New Hampshire-Vermont},
  author = {K. J. Campbell},
  year = {1974},
  doi = {10.3133/mf605a},
  url = {https://pubs.usgs.gov/publication/mf605A},
  note = {Source identifier: mf605A}
}