Kabiru Muhammad, Aishatu Bello Mahmoud, Bara’atu Abubakar and Sulaiman Mohammed 2020. THE WATER QUALITY AND FISH PRODUCTIVITY OF GOMBE ABBA RIVER. International Engineering Journal For Research & Development. 5, Special Issue (Sep. 2020), 7. DOI:https://doi.org/10.17605/OSF.IO/467ZU.