@misc{indiciae9c520a0ae238,
  title = {Sample submittal manual},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/1491},
  url = {https://pubs.usgs.gov/publication/1491},
  note = {Source identifier: 1491}
}