WoywodtA., KissA.Geophagia: the history of earth-eating.J R Soc Med2002; 95: 143–6
2.
HunterJ.M., de KleineR.Geophagy in Central America.Geogr Rev1984; 74: 157–69
3.
ReidR.M.Cultural and medical perspectives on geophagia.Med Anthropol1992; 33: 337–51
4.
JohnsT., DuquetteM.Detoxification and mineral supplementation as functions of geophagy.Am J Clin Nutr1991; 53: 448–56
5.
HarveyP.W.J., DexterP.B., Darnton-HillI.The impact of consuming iron from non-food sources on iron status in developing countries.Pub Health Nutr2000; 3: 375–83
6.
MinnichV., OkcuogluA., TarconY.. Pica in Turkey. II. Effect of clay on iron absorption.Am J Clin Nutr1968; 21: 78–86