@misc{indiciae3664c67b931b, title = {Surface water supply of the United States, 1929, Part IX, Colorado River basin}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1931}, doi = {10.3133/wsp689}, url = {https://pubs.usgs.gov/publication/wsp689}, note = {Source identifier: wsp689} }