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Subject
Inland Waters
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281
Hydrology
176
Environment
29
Recreation
16
Biota
6
Boundaries
5
Elevation
2
Fish
2
Hydrography
2
Hydrologic
2
Tourism
2
Water
2
Economy
1
Glacial lake
1
Lakes
1
Public transit
1
Regions
1
Snails
1
Special regulation
1
Transportation
1