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Contributor
- United States. Army. Corps of Engineers 11
Topic
- Bodies of water 11
- Canals 11
- River channels 11
- River engineering 11
- Rivers 11
- United States. Congress--Records and correspondence 11
- River surveys 10
- Northwest, Pacific 8
- United States--Armed Forces--Organization--Charts, diagrams, etc 8
- Rapids 7
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Region
- Columbia River >> Douglas County >> Washington >> United States 11
- Oregon >> United States 11
- Washington >> United States 11
- Willamette River >> Multnomah County >> Oregon >> United States 11
- Snake River >> Franklin County >> Washington >> United States 10
- Coos Bay >> Coos County >> Oregon >> United States 5
- California >> United States 2
- Clearwater River >> Nez Perce County >> Idaho >> United States 2
- Idaho >> United States 2
- Yamhill River >> Yamhill County >> Oregon >> United States 2
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Language
- English 11