00482nam a22001217a 4500020002500000082001700025100001700042245005100059260005100110300003900161500002000200650014000220  a9788123915241 (pbk)   a617.601bJOH  aJohn, Joseph  aTextbook of preventive and community dentistry  aNew DelhibCBS Publishers & Distributorsc2007  axiv, 326 p.b: ill.,Col.c; 24 cm.  aIncludes index.  aCommunity dentistryaPreventive dentistryvEnvironmental healthvHealth educationvDental auxiliariesvHealth surveysvPreventionvIIDC