Subject
- Bacterial pollution of water -- Oregon -- Benton County1
- Bacterial pollution of water -- Oregon -- Coos County1
- Cattle -- Manure -- Environmental aspects -- Oregon -- Benton County1
- Enterobacteriaceae -- Oregon -- Benton County1
- Enterobacteriaceae -- Oregon -- Coos County1
- Grazing -- Oregon -- Benton County1
- Nonpoint source pollution -- Oregon -- Coos County1
- Polymerase chain reaction1
- Riparian plants -- Effect of grazing on -- Oregon -- Benton County1