@misc{indiciaeaf11d33f64d5,
  title = {Isopleth maps of pH and alkalinity in stream waters, and sodium in stream sediments of West Virginia},
  author = {M. E. Hinkle and K. C. Watts and W. R. Griffitts},
  year = {1994},
  doi = {10.3133/i2364e},
  url = {https://pubs.usgs.gov/publication/i2364E},
  note = {Source identifier: i2364E}
}