Subject
- Automobiles -- Motors -- Exhaust gas -- Environmental aspects -- Washington (State) -- Skagit County -- Mathematical models1
- Biodiversity -- Oregon -- Benton County1
- Cities -- Growth -- Environmental aspects -- Oregon -- Portland Metropolitan Area1
- Cities and towns -- California -- Napa County -- Growth1
- City traffic -- Environmental aspects -- Washington (State) -- Skagit County -- Mathematical models1
- Forest management -- Oregon -- Benton County1
- Forest management -- Oregon -- Planning1
- Forest site quality -- Oregon -- Lane County1
- Forest soils -- Oregon -- Lane County1
- Greenhouse gases -- Washington (State) -- Skagit County -- Mathematical models1
- Land use -- Environmental aspects -- Oregon -- Multnomah County1
- Land use -- Environmental aspects -- Washington (State) -- Skagit County -- Mathematical models1
- Land use -- Oregon -- Benton County1
- Land use -- Oregon -- Lane County1
- Land use -- Oregon -- Malheur County -- Classification1
- Land use -- Oregon -- Planning -- Public opinion1
- Land use -- Planning1
- Land use -- Planning -- Environmental aspects -- Oregon -- Portland1
- Land use -- Washington (State) -- Okanogan County1
- Land use, Rural -- California -- Napa County -- Planning1