00409nam a22001457a 450000500170000000800410001702000250005804000130008308200190009610000170011524500690013225000120020126000390021330000110025220260223101719.0260223b        |||||||| |||| 00| 0 eng d  a9788123915241  (pbk)  cPK-LaUMT  a617.601bJOH-T  aJohn, Joseph  aTextbook of preventive and community dentistry /cby Joseph John  a2nd ed.  aNew Delhi :bCBS Publishers,c2014  a326 p.