TY - BOOK AU - Nabers, Claude L. AU - Stalker, William H. TI - Periodontal therapy SN - 1556642199 PY - 1990/// CY - Toronto PB - B.C. Decker KW - Gingivitis KW - Periodontal Diseases KW - Periodontitis N1 - Includes index; Includes bibliographical references ER -