@misc{indiciaeb22044e14421,
  title = {Land use and land cover, 1973-75, Portland, Maine; New Hampshire},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1979},
  doi = {10.3133/l83},
  url = {https://pubs.usgs.gov/publication/l83},
  note = {Source identifier: l83}
}