@misc{indiciae586cce06f9e5,
  title = {Foreword},
  author = {W. N. Beyer and G. H. Heinz and A.W. Redmon-Norwood},
  year = {1996},
  url = {https://pubs.usgs.gov/publication/5210734},
  note = {Source identifier: 5210734}
}