@misc{indiciaeec3d6c89888f,
  title = {Surficial geologic map of the Natick quadrangle, Middlesex and Norfolk Counties, Massachusetts},
  author = {Arthur E. Nelson},
  year = {1974},
  doi = {10.3133/gq1151},
  url = {https://pubs.usgs.gov/publication/gq1151},
  note = {Source identifier: gq1151}
}