S C7 



Mechanisms of 



Hard Tissue Destruction 



A Symposium Presented at the Philadelphia Meeting of 

 The American Association for the Advancement of Science 

 December 29 and 30, 1962 



Edited by 



REIDAR F. SOGNNAES 



School of Dentistry 



Center for the Health Sciences 



University of California at Los Angeles 



f^^f 1 



Publication No. 75 of the 



AMERICAN ASSOCIATION FOR THE ADN'ANCEMENT OF SCIENCE 



\Vashington, D. C, 1963 



