@misc{indiciaea5fd443ca918,
  title = {Permafrost Technical report, 8 Jul. 1968 - 31 Dec. 1970},
  author = {Lourenco, J. S. and Ward, S. H.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710009633},
  note = {Source identifier: 19710009633}
}