@misc{indiciae0c0069c1718d,
  title = {Bibliography on the occurrence, properties, and uses of zeolites from sedimentary deposits, 1985-1992},
  author = {Richard A. Sheppard and Evenne W. Sheppard},
  year = {1993},
  doi = {10.3133/ofr93570},
  url = {https://pubs.usgs.gov/publication/ofr93570},
  note = {Source identifier: ofr93570}
}