@misc{indiciae8d32f48250ad,
  title = {Controlled environment crop production - Hydroponic vs. lunar regolith},
  author = {Bugbee, Bruce G. and Salisbury, Frank B.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19910030111},
  note = {Source identifier: 19910030111}
}