@misc{indiciaeef0442e35eb1,
  title = {Launch operations},
  author = {Hahn, A. C. and Michalson, G. M. and Ziemianski, J. A.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690027908},
  note = {Source identifier: 19690027908}
}