@misc{indiciae166ed5ba0d66,
  title = {Map showing plant zonation in relation to biotopes and geomorphic features of the South Bird Island 7.5 minute quadrangle, Texas},
  author = {Gary W. Hill and Ralph Eugene Hunter},
  year = {1979},
  doi = {10.3133/ofr791322},
  url = {https://pubs.usgs.gov/publication/ofr791322},
  note = {Source identifier: ofr791322}
}