@misc{indiciae7068ef231c22,
  title = {S-4B/5 auxiliary propulsion system 90-day recycle capability test report, module 2},
  author = {Browning, W. L.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700026531},
  note = {Source identifier: 19700026531}
}