@misc{indiciae6b60c7879701,
  title = {Core sample extractor},
  author = {Akins, James and Cobb, Billy and Hart, Steve and Leaptrotte, Jeff and Milhollin, James and Pernik, Mark},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900014424},
  note = {Source identifier: 19900014424}
}