@misc{indiciae76f6800a0f12, title = {Surface water supply of the United States, 1959, Part 7, lower Mississippi River Basin}, author = {J. V. B. Wells}, year = {1960}, doi = {10.3133/wsp1631}, url = {https://pubs.usgs.gov/publication/wsp1631}, note = {Source identifier: wsp1631} }