@misc{indiciaec6601fcb5460, title = {Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Middle Ohio-Little Miami River Basin Using a Geographic Information System}, author = {Hugh L. Nelson and Aimee C. Downs and Steve D. Crabtree and Doug H. Hines}, year = {1997}, doi = {10.3133/ofr97613}, url = {https://pubs.usgs.gov/publication/ofr97613}, note = {Source identifier: ofr97613} }