@misc{indiciaef6adb9585985,
  title = {Nondetrital siliceous sediments},
  author = {E. R. Cressman},
  year = {1962},
  doi = {10.3133/pp440t},
  url = {https://pubs.usgs.gov/publication/pp440T},
  note = {Source identifier: pp440T}
}