Ibsen, Olga A. C. Oral pathology for the dental hygienist/ by Olga A.C. Ibsen and Joan Andersen Phelan - 6th edition - Missouri : Elsevier/Saunders, 2014. - xiv, 369 p. Includes index ISBN: 9781455703708 Subjects--Topical Terms: Mouth--DiseasesDental hygienists Dewey Class. No.: 617.522