P. Wotchoko, “Remineralization of a Dystric Ferralsol Using Basalt and Tephra Dusts, Effective Microorganisms Manure and NPK 20-10-10 for Radish (Raphanus sativus) Production in Bamougoum (Cameroon Western Highlands)”, j. of environ. & earth. sci., vol. 3, no. 1, pp. 1–15, Apr. 2021.