@misc{indiciae7713c0948149,
  title = {Explanation to accompany preliminary map showing bedrock geology superposed on an aeromagnetic base map of the Worcester region, Massachusetts, Connecticut, and Rhode Island},
  author = {Patrick James Barosh},
  year = {1977},
  doi = {10.3133/ofr77131},
  url = {https://pubs.usgs.gov/publication/ofr77131},
  note = {Source identifier: ofr77131}
}