@misc{indiciae694a92d73246,
  title = {Materials Flow and Sustainability},
  author = {John L. Sznopek and William M. Brown},
  year = {1998},
  doi = {10.3133/fs06898},
  url = {https://pubs.usgs.gov/publication/fs06898},
  note = {Source identifier: fs06898}
}