@misc{indiciae00715ec4560d,
  title = {Reconnaissance surficial geologic map of the Houlton quadrangle, Aroostook County, Maine},
  author = {Louis Pavlides},
  year = {1969},
  doi = {10.3133/ofr69194},
  url = {https://pubs.usgs.gov/publication/ofr69194},
  note = {Source identifier: ofr69194}
}