00368pam a2200133 a 4500020002400000041000500024082001700029100002300046245006400069250000700133260005600140300001900196653001900215  a978-1-4160-0175-1c  h  a617.632bDOR  aDorothy A,ePerry.  aPeriodontology for the dental hyginenisthTextual Documents  a3.  aPhiladelphiabSaunders An Imprint of Elsevierc2007  a484:c26*1805.  aPeriodontology