ECOLOGICAL ASSESSMENT OF SETU RIVER POLLUTION USING SAPROBIC INDEX AND AQUATIC BIOTA DIVERSITY. BIOTROPIA [Internet]. 2026 Apr. 30 [cited 2026 Aug. 16];33(2):231-4. Available from: https://journal.biotrop.org/index.php/biotropia/article/view/ecological-assessment-of-setu-river-pollution