@misc{indiciae99aaba426bcc,
  title = {CHEMANAL; a MULTICS Fortran program to calculate chemical weathering data},
  author = {Steven M. Colman},
  year = {1980},
  doi = {10.3133/ofr80844},
  url = {https://pubs.usgs.gov/publication/ofr80844},
  note = {Source identifier: ofr80844}
}