@misc{indiciaecd993ed6ade0,
  title = {Map showing resources of coarse aggregate, Essex quadrangle, Connecticut},
  author = {R. G. Naylor},
  year = {1974},
  doi = {10.3133/mf587b},
  url = {https://pubs.usgs.gov/publication/mf587B},
  note = {Source identifier: mf587B}
}