@misc{indiciaec14ece4d2210,
  title = {A field calibration of the sediment-trapping characteristics of the Helley-Smith bed-load sampler},
  author = {William W. Emmett},
  year = {1980},
  doi = {10.3133/pp1139},
  url = {https://pubs.usgs.gov/publication/pp1139},
  note = {Source identifier: pp1139}
}