1. Frank, R. M., Sognnaes, R. F., and Kern, R.: Calcification of dental tissues with special reference to enamel ultra structure. In Proceedings of Symposium on Calcification in Biological Systems. Am. Assn. for Advancement of Science Pub. No. 64, 1960.
2. The nutritional status of Papago Indian children;Vavich;J. Nutr.,1954
3. Influence of mineral intake on bone density in humans and in rats;Williams;J. Nutr.,1957
4. Adaptation to a low-calcium intake;Thorangkul;J. Am. Dietet. A.,1959
5. Bone density of East Indian and American students;Williams;J. Am. Dietet. A.,1960