531,415 PROCEEDINGS Proceedings of the Fifty-fifth Genaral Session of the International Association for Dental Research Copenhagen,Denmark,March 31 April 3,1977.Proceedings of the Annual Session of the American Association for Dental Research.Abstracts of papers presented at Meetings of the British,Continental European,Israeli,Japanese,South African,Austra-lian-New Zealand,and Argentine Divisions. Houston 1977 8° s.228 Journal of Dental Research vol.56,Special issue D.