1. Nutrients and toxins of plants in Amboseli, Kenya;Altmann;African Journal of Ecology,1987
2. Soil ingestion by mule deer in North-Central Colorado;Arthur;Journal of Range Management,1979
3. Geochemistry and mineralogy of soils eaten by humans;Aufreiter;International Journal of Food Sciences and Nutrition,1997
4. Attractants and repellents in higher animals;Bate-Smith,1972
5. Bennett, E. L. 1983, The banded langur: the ecology of a colobine in a West Malaysian forest, University of Cambridge