purnama, arif. “STRUKTUR KOMUNITAS MAKROZOOBENTOS DI SUNGAI KUMU KABUPATEN ROKAN HULU”. Agroprimatech 1, no. 1 (March 11, 2019): 40–43. Accessed April 3, 2026. http://139.162.50.187/index.php/Agroprimatech/article/view/434.