Ezeaku, Peter Ikemefuna, Onyeishi Ifeyinwa, and Ezeaku Victor. 2020. “LAND DEGRADATION IN THREE LOCATIONS AND SAMPLING PERIODS IN PHYSIOGRAPHIC UNITS UNDER ARABLE CROP PRODUCTION IN SUB- HUMID TROPICS OF NIGERIA”. International Journal of Agricultural and Natural Sciences 13 (2):62-82. https://ijans.org/index.php/ijans/article/view/497.