@misc{indiciae88ca9ab4de1d,
  title = {Natural Aggregates - Foundation of America's Future},
  author = {Valentin V. Tepordei},
  year = {1997},
  doi = {10.3133/fs14497},
  url = {https://pubs.usgs.gov/publication/fs14497},
  note = {Source identifier: fs14497}
}