@misc{indiciaea69da024021d,
  title = {Geology and geologic interpretation of seismic data, relocation of Route 3, station 496, in Billerica, to station 6, in Chelmsford, Massachusetts},
  author = {J.E. Maynard and R.M. Hazelwood},
  year = {1953},
  doi = {10.3133/ofr53177},
  url = {https://pubs.usgs.gov/publication/ofr53177},
  note = {Source identifier: ofr53177}
}