@misc{indiciae6bef33d90f15,
  title = {Trace elements in fines from the Apollo 15 deep drill.},
  author = {Helmke, P. A. and Telander, K. M. and Weiss, C. K. and Haskin, L. A.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730039311},
  note = {Source identifier: 19730039311}
}