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Morekhure-Mphahlele, R.; Focke, W. W.; Grote, W. Characterisation of Vumba and Ubumba Clays Used for Cosmetic Purposes. S. Afr. J. Sci. 2017, 113 (3/4), 5. https://doi.org/10.17159/sajs.2017/20160105.