@misc{indiciae1909c8559a17,
  title = {Assessment of regional change in nitrate concentrations in groundwater in the Central Valley, California, USA, 1950s-2000s},
  author = {Karen R. Burow and Bryant C. Jurgens and Kenneth Belitz and Neil M. Dubrovsky},
  year = {2012},
  doi = {10.1007/s12665-012-2082-4},
  url = {https://pubs.usgs.gov/publication/70047602},
  note = {Source identifier: 70047602}
}