525,771 PROCEEDINGS Proceedings of the Fifty-Third General Session of the International Association for Dental Research.London,England,April 10-12,1975.Proceedings of the Annual Session of the American Association for Dental Research. Abstracts of papers presented at meetings of the Israeli and Japanese divisions and titles of papers presented at meetings of sections of the AADR. Chicago 1975 8° s. 112, il. Journal of Dental Research vol.54,spec.issue