BateG. B., and Sam-UketN. O. “PHYSICO–CHEMICAL PARAMETERS AND BENTHIC MACRO-INVERTEBRATE COMMUNITIES OF CALABAR RIVER, NIGERIA”. FUDMA JOURNAL OF SCIENCES, Vol. 3, no. 3, Apr. 2023, pp. 567 -5, https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1603.