@misc{indiciaed9d1d2441d66,
  title = {A new heat-flow contour map of the conterminous United States},
  author = {J.H. Sass and W.H. Diment and A.H. Lachenbruch and B.V. Marshall and R. J. Munroe and T. H. Moses and T. C. Urban},
  year = {1976},
  doi = {10.3133/ofr76756},
  url = {https://pubs.usgs.gov/publication/ofr76756},
  note = {Source identifier: ofr76756}
}