@misc{indiciae60e7b889c9a0,
  title = {Ground-water flow in the Central Valley, California},
  author = {A. K. Williamson and David E. Prudic and L.A. Swain},
  year = {1989},
  doi = {10.3133/pp1401d},
  url = {https://pubs.usgs.gov/publication/pp1401D},
  note = {Source identifier: pp1401D}
}