TY - RPRT TI - Environmental Characteristics and Geographic Information System Applications for the Development of Nutrient Thresholds in Oklahoma Streams AU - Jason R. Masoner AU - Brian E. Haggard AU - Alan Rea PY - 2002 DO - 10.3133/wri024191 UR - https://pubs.usgs.gov/publication/wri024191 ID - wri024191 ER -