Subject
- Sewage disposal -- Oregon -- Tillamook County2
- Agricultural wastes -- Oregon -- Tillamook County1
- Best management practices (Pollution prevention) -- Oregon -- Tualatin River (Or.)1
- Coos Bay Estuary (Or.)1
- Feces -- Microbiology -- Oregon -- Tillamook Bay1
- Hydrology1
- Shellfish as food -- Contamination1
- Tualatin River (Or.)1
- Water -- Pollution -- Oregon -- Coos Bay Estuary1
- Water -- Pollution -- Oregon -- Tillamook Bay1
- Water quality -- Oregon -- Coos Bay Estuary1
- Water quality -- Oregon -- Tualatin River (Or.) -- Mathematical models1
- Water quality biological assessment -- Oregon -- Coos Bay Estuary1
- Water quality management -- Oregon -- Tillamook Bay1