000 00273nam a2200121Ia 4500
008 200504s9999 xx 000 0 und d
245 0 _aJournal of Periodontal Research
250 _a-
260 _aForeign
_c2006
490 _v41/-
500 _a-
650 _aPeriodontology
999 _c4094
_d4094