2002, The Potential Impact of Geophagia on the Bioavailability of Iron, Zinc and Calcium in Human Nutrition

P.s. Hooda. C.J.K. Henry, T.A. Seyoum, L.D.M. Armstrong, M.B. Fowler

Environmental Geochemistry and Health, December 2002, Volume 24, Issue 4, pp 305–319

https://link.springer.com/article/10.1023/A:1020542810334