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022 _a01987569
245 _aTHE INTERNATIONAL JOURNAL OF PERIODONTICS &RESTORATIVE DENTISTRY
260 _aGERMANY
_bH W HASSE
_c2019
300 _a767-902
650 _aPERIODONTOLOGY
700 _aNEVINS,MYRON
942 _2ddc
_cJOURNAL
942 _s1