@misc{indiciaead3193f75e18, title = {Concentration and mineralogical residence of elements in rich oil shales of the Green River Formation, Piceance Creek Basin, Colorado, and the Uinta Basin, Utah; a preliminary report}, author = {George A. Desborough and Janet K. Pitman and Claude Huffman}, year = {1974}, doi = {10.3133/ofr7477}, url = {https://pubs.usgs.gov/publication/ofr7477}, note = {Source identifier: ofr7477} }