@misc{indiciae9628f2f2ac3f,
  title = {Strontium isotopes reveal distant sources of architectural timber in Chaco Canyon, New Mexico},
  author = {N.B. English and J.L. Betancourt and J.S. Dean and Jay Quade},
  year = {2001},
  doi = {10.1073/pnas.211305498},
  url = {https://pubs.usgs.gov/publication/70023074},
  note = {Source identifier: 70023074}
}