@misc{indiciaeecdd34033cff,
  title = {Geologic map of the Chester quadrangle, Hampden and Hampshire Counties, Massachusetts},
  author = {Norman L. Hatch and Stephen A. Norton and Russell G. Clark},
  year = {1970},
  doi = {10.3133/gq858},
  url = {https://pubs.usgs.gov/publication/gq858},
  note = {Source identifier: gq858}
}