@misc{indiciae6dbe906b4fb8,
  title = {Sediment laboratory quality-assurance project: studies of methods and materials},
  author = {J.D. Gordon and C.A. Newland and J. R. Gray},
  year = {2001},
  url = {https://pubs.usgs.gov/publication/70120642},
  note = {Source identifier: 70120642}
}