Allen, Don L. Periodontics for the dental hygienist [electronic resource] / [by] Don L. Allen, Walter T. McFall, Jr. [and] Grover C. Hunter, Jr.. — Philadelphia, : Lea & Febiger,, 1968.. — xi, 211 p. : illus. 24 cm. Includes bibliographies. LCCN: 68018851 Nat. Bib. Agency Control No.: 0135434 DNLM Subjects--Topical Terms: Dental hygiene.Periodontics.Parodontologie.HygiĆ©nistes dentaires.Parodonte--Physiologie.Parodontopathies.Dental Hygienists.Periodontal Diseases. LC Class. No.: RK361 / .A37 Dewey Class. No.: 617/.632 National Library of Medicine Call No.: WU 240 / A425p 1968