@misc{indiciae214d6410b409,
  title = {Paleoclimatic significance of δD and δ 13 C values in pinon pine needles from packrat middens spanning the last 40,000 years},
  author = {Elise Pendall and Julio L. Betancourt and Steven W. Leavitt},
  year = {1999},
  doi = {10.1016/s0031-0182(98)00152-7},
  url = {https://pubs.usgs.gov/publication/70021833},
  note = {Source identifier: 70021833}
}