Die Kur - Kraft für Körper, Seele und den Alltag
Geissler PW
Africa, Volume 70, Issue 4November 2000 , pp. 653-682, ISSN: 0001-9720 (Print), 1750-0184 (Online)
https://www.cambridge.org/core/journals/africa/article/significance-of-eartheating-social-and-cultural-aspects-of-geophagy-among-luo-children/A21969F5A6668506F36FED0D3DEAAAB0