@misc{indiciaeccfa6d8453e2,
  title = {Methods for collection and processing of surface-water and bed- material samples for physical and chemical analyses},
  author = {J. R. Ward and C.A. Harr},
  year = {1990},
  doi = {10.3133/ofr90140},
  url = {https://pubs.usgs.gov/publication/ofr90140},
  note = {Source identifier: ofr90140}
}