TY - RPRT TI - Nutrient concentrations, loads, and yields in the Eucha-Spavinaw Basin, Arkansas and Oklahoma, 2002-2006 AU - Robert L. Tortorelli PY - 2008 DO - 10.3133/sir20085174 UR - https://pubs.usgs.gov/publication/sir20085174 ID - sir20085174 ER -