@misc{indiciae03e2a44d0f8c,
  title = {Planetary contamination. II.},
  author = {Davies, M. E. and Eckman, P. K. and Murray, B. C.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670044851},
  note = {Source identifier: 19670044851}
}