@misc{indiciae31ea56df0972,
  title = {Controlled Ecological Life Support System: Regenerative Life Support Systems in Space},
  author = {Macelroy, Robert D. and Smernoff, David T.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880002869},
  note = {Source identifier: 19880002869}
}