000 00363nam a2200145Ia 4500
008 181030s9999 xx 000 0 und d
082 _a617.632
100 _aBerns Joel M
245 0 _aUNDERSTANDING PERIODONTAL DISEASES
250 _a-
260 _bQuintessence Publishing Co, Inc
_aILLINOIS
_c1993
300 _a48
650 _aPERIODONTOLOGY
942 _cBK
999 _c23384
_d23384