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- Ren, Yufen [remove] 3
- 333.71405 2
- Benthic diatoms -- Urban stream -- Urban–rural gradient -- Nutrients -- Indicator species -- Beijing 2
- Environmental impact analysis -- Periodicals 2
- Environmental management -- Periodicals 2
- Environmental monitoring -- Periodicals 2
- Environmental risk assessment -- Periodicals 2
- Sustainable development -- Periodicals 2
- 540.5 1
- Chemistry -- Periodicals 1