000 00274nam a2200121Ia 4500
008 200504s9999 xx 000 0 und d
245 0 _aJournal of Periodontology
250 _aMay-Aug
260 _aForeign
_c2011
490 _v82/II
500 _a-
650 _aPeriodontology
999 _c3731
_d3731