Subject
- Land use -- Oregon -- Wasco County -- Planning3
- Land use, Rural -- Oregon -- Wasco County -- Planning3
- Regional planning -- Oregon -- Wasco County3
- Almanacs, American -- Oregon1
- Arid regions forestry -- United States1
- Calendars -- Oregon1
- Cascade Head (Or.)1
- Clark County (Wash.) -- History -- Chronology1
- Climatic changes1
- Dissertations, Academic -- United States -- Bibliography -- Catalogs1
- Ecological assessment (Biology)1
- Ecological disturbances1
- Engineering1
- Factory and trade waste -- Oregon1
- Fire ecology -- United States1
- Forest influences1
- Forest management -- United States1
- Forest rangers -- Great Basin1
- Forest thinning -- United States1
- Forestry schools and education -- California1