000 00270nam a2200121Ia 4500
008 200511s9999 xx 000 0 und d
245 0 _aJournal of Periodontology
250 _aForeign
260 _c-,2013
490 _v84/III
500 _a-
650 _aPeriodontology
999 _c40116
_d40116