Babagana, M. ., M. . Musa Janga, and A. . Adamu. “Assessment of Farmers’ Perception of Land Degradation and Coping Strategies in Yobe State, Nigeria”. International Journal of Contemporary Research and Review, vol. 11, no. 04, Apr. 2020, pp. 20379–20388, doi:10.15520/ijcrr.v11i04.798.