[1]
M. Viljoen, P. Bipath, and J. L. Roos, “Aetiological doctrines and prevalence of pellagra: 18th century to middle 20th century”, S. Afr. J. Sci., vol. 114, no. 9/10, Sep. 2018, doi: 10.17159/sajs.2018/4597.