@misc{indiciaeae7bdb1d52fc,
  title = {Methodology for back-contamination risk assessment for a Mars sample return mission},
  author = {Merkhofer, M. W. and Quinn, D. J.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770018855},
  note = {Source identifier: 19770018855}
}