000 00268 a2200109 4500
005 20220430021907.0
022 _a0020 7500
245 _aJournal of orthodontics
260 _aChicago
_bFederation of orthodontic Association
_c1981
490 _vVol. 19
942 _2lcc
_cCR
999 _c21081
_d21081