@misc{indiciae9c98542d347d,
  title = {Manual del McVCO 1999},
  author = {P.J. McChesney},
  year = {1999},
  doi = {10.3133/ofr99361s},
  url = {https://pubs.usgs.gov/publication/ofr99361S},
  note = {Source identifier: ofr99361S}
}