@misc{indiciaef4226fd5a1e0, title = {Quality of water from test wells in the Castolon area, Big Bend National Park, Brewster County, Texas}, author = {Jack Rawson}, year = {1963}, doi = {10.3133/ofr63113}, url = {https://pubs.usgs.gov/publication/ofr63113}, note = {Source identifier: ofr63113} }