@misc{indiciaed253963a7915, title = {Quality of surface waters of the United States, 1964, Parts 9-11, Colorado River basin to Pacific slope basins in California}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1969}, doi = {10.3133/wsp1958}, url = {https://pubs.usgs.gov/publication/wsp1958}, note = {Source identifier: wsp1958} }