000 00273nam a2200121Ia 4500
008 200504s9999 xx 000 0 und d
245 0 _aJournal of Periodontology
250 _aJan-Jun
260 _aForeign
_c2015
490 _v86/I
500 _a-
650 _aPeriodontology
999 _c4287
_d4287