@misc{indiciaef3a180f234e8,
  title = {DLG2ISM, a Fortran program to read DLG-3 optional format digital data files into the VAX/VMS version of the interactive surface modeling software package; B, Source code DLG2ISM.FOR},
  author = {Gregory N. Green},
  year = {1988},
  doi = {10.3133/ofr88258b},
  url = {https://pubs.usgs.gov/publication/ofr88258B},
  note = {Source identifier: ofr88258B}
}