00531nam a22001697a 4500003000400000020001800004082001800022100003000040245004300070260003800113300000800151650001700159653003900176942001200215952011700227999001700344SGT  a9786204202365  a617.632bC21C  aChugh, Alisha...[et. al.]  aClassification of Periodontal Diseases  bLambert Academic Publishingc2021  a219  aPeriodontics  aPeriodontics; Periodontal Diseases  2ddccBK  00102ddc4071aFDbFDcDISPLAYd2023-03-03iSGTUl0o617.632 C21CpFD8969r2023-03-03 00:00:00w2023-03-03yBK  c23835d23835