THE EFFECTIVENESS OF REBOIZATION TO THE QUALITY OF SIAK RIVER IN THE VILLAGE OF MAREDAN SUBDISTRICT OF TUALANG. Universitas Riau [Internet]. 2018 Feb. 1 [cited 2025 Aug. 2];2(1):9-14. Available from: https://jiik.ejournal.unri.ac.id/index.php/JIIK/article/view/38