World Workshop in Periodontics, Ann Arbor, Michigan, June 6-9, 1966 / editorial committee: Sigurd P. Ramfjord, Donald A. Kerr, Major M. Ash.

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World Workshop in Periodontics (1966 : University of Michigan)

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World Workshop in Periodontics, Ann Arbor, Michigan, June 6-9, 1966 / editorial committee: Sigurd P. Ramfjord, Donald A. Kerr, Major M. Ash.