@misc{indiciae17d3a6365554,
  title = {Preliminary determinations of sediment discharge, San Juan Drainage Basin, Orange, Riverside, and San Diego Counties, California},
  author = {Carl G. Kroll and George Porterfield},
  year = {1969},
  doi = {10.3133/ofr69146},
  url = {https://pubs.usgs.gov/publication/ofr69146},
  note = {Source identifier: ofr69146}
}