@misc{indiciae3179243d3fb9,
  title = {Thorium and uranium variations in Apollo 17 basalts, and K-U systematics},
  author = {Laul, J. C. and Fruchter, J. S.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770051889},
  note = {Source identifier: 19770051889}
}