Rosenta Purba I, Harahap A. Plankton Diversity in Aek Rao River Gunung Tua. IJSTM [Internet]. 2022 Nov. 15 [cited 2026 Jan. 22];3(6):1820-4. Available from: https://ijstm.inarah.co.id/index.php/ijstm/article/view/687