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CALIDAD DEL AGUA (3) |
WATER QUALITY (3) |
ZONAS URBANAS (3) |
HEREDIA (COSTA RICA) (2) |
RIOS (2) |
AGUA (1) |
BENTHIC MACROINVERTEBRATES (1) |
DIATOMEAS (1) |
EFLUENTES (1) |
FITOPLANCTON (1) |
CALIDAD DEL AGUA (3) |
WATER QUALITY (3) |
ZONAS URBANAS (3) |
HEREDIA (COSTA RICA) (2) |
RIOS (2) |
AGUA (1) |
BENTHIC MACROINVERTEBRATES (1) |
DIATOMEAS (1) |
EFLUENTES (1) |
FITOPLANCTON (1) |