TY  - RPRT
TI  - Development of an 11- and 14-digit hydrologic unit boundary layer for the Lower Ohio-Salt River Basin using a Geographic Information System
AU  - Hugh L. Nelson
AU  - Aimee C. Downs
AU  - Steve D. Crabtree
AU  - Doug H. Hines
PY  - 1997
DO  - 10.3133/ofr97614
UR  - https://pubs.usgs.gov/publication/ofr97614
ID  - ofr97614
ER  -