@misc{indiciae7baed4f22c11,
  title = {Lithotectonic assemblages as portrayed on the new bedrock geologic map of Massachusetts},
  author = {N. L. Hatch and E-An Zen and R. Goldsmith and N. M. Ratcliffe and P. Robinson and R. S. Stanley},
  year = {1985},
  url = {https://pubs.usgs.gov/publication/70012902},
  note = {Source identifier: 70012902}
}