@misc{indiciae9e6464eb36ac,
  title = {Conceptual design of a closed loop nutrient solution delivery system for CELSS implementation in a micro-gravity environment},
  author = {Schwartzkopf, Steven H. and Oleson, Mel W. and Cullingford, Hatice S.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900040490},
  note = {Source identifier: 19900040490}
}