Umeugokwe , C.; Ugwu, V.; Umeugochukwu , O.; Uzoh , I.; Obalum , S.; Ddamulira , G.; Karwani , G.; Alenoma , G. Soil Fertility Indices of Tropical Loamy Sand As Influenced by Bambara Groundnut Variety, Plant Spacing and Fertilizer Type. Agro-Sci. 2021, 20, 65-71.