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Topic
- Canals--Design and construction--Costs 12
- Dams--Design and construction 12
- Bodies of water 11
- Transportation 11
- West (U.S.) 11
- Northwest, Pacific 10
- Rivers 10
- Water resources development 10
- Locks (Hydraulic engineering) 2
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Region
- Columbia River >> Clatsop County >> Oregon >> United States 12
- Cowlitz River >> Cowlitz County >> Washington >> United States 12
- Portland >> Clackamas County >> Oregon >> United States 12
- Willamette River >> Multnomah County >> Oregon >> United States 12
- Nooksack River >> Whatcom County >> Washington >> United States 11
- Snohomish River >> Snohomish County >> Washington >> United States 11
- Chehalis River >> Grays Harbor County >> Washington >> United States 10
- Skagit River >> Skagit County >> Washington >> United States 10
- Snake River >> Franklin County >> Washington >> United States 10
- Astoria >> Clatsop County >> Oregon >> United States 2
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Type
- Text 9
- Collection 3
Decade
- 1890-1899 12