@misc{indiciaee16f95040ebb,
  title = {Instructions for using the punchcard system for the storage and retrieval of ground-water data. (NOTE: This publication is no longer maintained, USGS Library still has a copy)},
  author = {Solomon Max Lang and Alvin Riley Leonard},
  year = {1967},
  doi = {10.3133/twri07a},
  url = {https://pubs.usgs.gov/publication/twri07A},
  note = {Source identifier: twri07A}
}