@misc{indiciae6a000b8c131f,
  title = {Integrating geographic information systems for water resources research (stage I) in the National Parks},
  author = {M. J. Paulson and R. Herrmann},
  year = {1993},
  url = {https://pubs.usgs.gov/publication/70128540},
  note = {Source identifier: 70128540}
}