@misc{indiciae4f7110d91281,
  title = {Problems and techniques of lunar surface mining},
  author = {Cox, R. M. and Fields, S. A. and Shotts, R. Q. and Weathers, H. M.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670012843},
  note = {Source identifier: 19670012843}
}