@misc{indiciae0421242f1257,
  title = {Maps of estimated nitrate and arsenic concentrations in basin-fill aquifers of the southwestern United States},
  author = {Kimberly R. Beisner and David W. Anning and Angela P. Paul and Tim S. McKinney and Jena M. Huntington and Laura M. Bexfield and Susan A. Thiros},
  year = {2012},
  doi = {10.3133/sim3234},
  url = {https://pubs.usgs.gov/publication/sim3234},
  note = {Source identifier: sim3234}
}