Subject
- Algebra, Abstract1
- Best management practices (Pollution prevention) -- Oregon -- Willamette River Valley -- Citizen participation1
- Cloud forest conservation -- Social aspects -- Ecuador1
- Determinants1
- Ecotourism -- Social aspects -- Ecuador1
- Embryology1
- Environmental justice -- Ecuador1
- Equations of state1
- Farmers -- Oregon -- Willamette River Valley -- Attitudes1
- Fish populations -- Klamath River (Or. and Calif.)1
- Fourier series1
- Geometry, Algebraic1
- Groundwater -- Pollution -- Oregon -- Willamette River Valley -- Prevention -- Citizen participation1
- Harmonic analysis1
- Heat -- Conduction1
- Hymenoptera1
- Karok Indians -- Oregon -- Interviews1
- Karok Indians -- Oregon -- Social life and customs1
- Lampreys -- Ecology -- Klamath River (Or. and Calif.)1
- Leafhoppers1