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found: Scheffler, R.M. Periodontal disease, 1981 (a.e.) t.p. (Sheldon Rovin, D.D.S., M.S., chairperson, Dept. of Dental Care Systems, School of Dental Med., Univ. of Penn., Phila., Pa.)
found: Managing hospitals, 1991: CIP t.p. (Sheldon Rovin) data sh. (b. 12-06-32)