Subject
- Alder -- Grande Ronde River (Or. and Wash.)1
- Alder -- Oregon -- Catherine Creek1
- Alder -- Oregon -- Meadow Creek (Union County)1
- Riparian ecology -- Grande Ronde River (Or. and Wash.)1
- Riparian ecology -- Oregon -- Meadow Creek (Union County)[remove]1
- Riparian ecology -- Oregon -- Oregon -- Catherine Creek1
- Riparian plants -- Grande Ronde River (Or. and Wash.)1
- Riparian plants -- Oregon -- Catherine Creek1
- Riparian plants -- Oregon -- Meadow Creek (Union County)1
- Willows -- Grande Ronde River (Or. and Wash.)1
- Willows -- Oregon -- Catherine Creek1
- Willows -- Oregon -- Meadow Creek (Union County)1