@misc{indiciae86e419ada36c,
  title = {Late Quaternary loess in northeastern Colorado: Part II - Pb isotopic evidence for the variability of loess sources},
  author = {J. N. Aleinikoff and D.R. Muhs and R.R. Sauer and C.M. Fanning},
  year = {1999},
  doi = {10.1130/0016-7606(1999)111<1861:lqlinc>2.3.co;2},
  url = {https://pubs.usgs.gov/publication/70020931},
  note = {Source identifier: 70020931}
}