@misc{indiciae668806730efe,
  title = {Modeling the long-term fate of agricultural nitrate in groundwater in the San Joaquin Valley, California},
  author = {Francis H. Chapelle and Bruce G. Campbell and Mark A. Widdowson and Mathew K. Landon},
  year = {2013},
  doi = {10.5772/53652},
  url = {https://pubs.usgs.gov/publication/70044922},
  note = {Source identifier: 70044922}
}