TY - BOOK AU - Nield-Gehrig,Jill S. TI - Periodontal instrumentation for the practitioner SN - 0683304933 PY - 1999/// CY - Baltimore PB - Williams & Wilkins KW - Periondontal Diseases KW - therapy KW - Debridement KW - methods KW - Periodontics KW - Instrumentation N1 - Includes bibliographical references and index ER -