@misc{indiciae771d13b660ff,
  title = {Map showing resources of coarse aggregate, Branford quadrangle, Connecticut},
  author = {C. Erwin Brown},
  year = {1974},
  doi = {10.3133/mf560b},
  url = {https://pubs.usgs.gov/publication/mf560B},
  note = {Source identifier: mf560B}
}