@misc{indiciaec3b1dc9d79b1,
  title = {Teaching planetary sciences to elementary school teachers: Programs that work},
  author = {Lebofsky, Larry A. and Lebofsky, Nancy R.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940011873},
  note = {Source identifier: 19940011873}
}