@misc{indiciaee19dcd494f37,
  title = {Lunar rock compositions and some interpretations},
  author = {A.E.J. Engel and C.G. Engel},
  year = {1970},
  doi = {10.1126/science.167.3918.527},
  url = {https://pubs.usgs.gov/publication/70010087},
  note = {Source identifier: 70010087}
}