@misc{indiciae5ad262bff33d,
  title = {Results of chemical analyses of soil, shale, and soil/shale extract from the Mancos Shale formation in the Gunnison Gorge National Conservation Area, southwestern Colorado, and at Hanksville, Utah},
  author = {Michele L.W. Tuttle and Juli Fahy and Richard I. Grauch and Bridget A. Ball and Geneva W. Chong and John G. Elliott and John J. Kosovich and Keith E. Livo and Lisa L. Stillings},
  year = {2007},
  doi = {10.3133/ofr20071002d},
  url = {https://pubs.usgs.gov/publication/ofr20071002D},
  note = {Source identifier: ofr20071002D}
}