Mbaya, Lazarus Abore. “Spatial Analysis of Gully Erosion Control Measures in Gombe Town, Gombe State Nigeria”. European Journal of Applied Sciences 5, no. 4 (September 5, 2017): 17. Accessed November 22, 2024. https://journals.scholarpublishing.org/index.php/AIVP/article/view/3343.