@misc{indiciae34e9748f1ee3,
  title = {Hydrologic Unit Map — 1974, State of New Jersey},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1974},
  doi = {10.3133/hu30},
  url = {https://pubs.usgs.gov/publication/hu30},
  note = {Source identifier: hu30}
}