@misc{indiciaeacd0d3fde0ca,
  title = {Skylab indicators (event timer) (secondary display) (four-digit metabolic display)},
  author = {Tiberg, W.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720010780},
  note = {Source identifier: 19720010780}
}