@misc{indiciaee31b231bd148,
  title = {Material flow analysis for an industry - A case study in packaging},
  author = {K. Sandgren},
  year = {1996},
  doi = {10.1007/bf02257437},
  url = {https://pubs.usgs.gov/publication/70033419},
  note = {Source identifier: 70033419}
}