@misc{indiciaef1ba53f9fed9,
  title = {Water quality, sources of nitrate, and chemical loadings in the Geronimo Creek and Plum Creek watersheds, south-central Texas, April 2015–March 2016},
  author = {Rebecca B. Lambert and Stephen P. Opsahl and MaryLynn Musgrove},
  year = {2017},
  doi = {10.3133/sir20175121},
  url = {https://pubs.usgs.gov/publication/sir20175121},
  note = {Source identifier: sir20175121}
}