TY  - RPRT
TI  - Hydrologic Drought of Water Year 2006 Compared with Four Major Drought Periods of the 20th Century in Oklahoma
AU  - Robert L. Tortorelli
PY  - 2008
DO  - 10.3133/sir20085199
UR  - https://pubs.usgs.gov/publication/sir20085199
ID  - sir20085199
ER  -