AUWAL AHMAD , M. ., and B. . BELLO WANAH. “DETERMINATION OF THE DRAINAGE DENSITY OF RIVER RIYADH BASIN IN AKKO LOCAL GOVERNMENT AREA OF GOMBE STATE, NIGERIA”. BIMA JOURNAL OF SCIENCE AND TECHNOLOGY (2536-6041), vol. 7, no. 01, Mar. 2023, pp. 230-43, doi:10.56892/bima.v7i01.402.