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- Bacterial pollution of water1
- Benthic animals1
- Caddisflies1
- Catalogs and collections1
- Citizen participation1
- Databases1
- Drinking water2
- Effect of pollution on1
- Effect of water quality on1
- Environmental aspects2
- Equipment and supplies1
- Evaluation1
- Fish habitat improvement1
- Fishes3
- Freshwater ecology2
- Freshwater insects1
- Groundwater1
- Habitat1
- Mayflies1
- Monitoring1