RT Journal Article SR Electronic T1 Review of: Color Atlas of Dental Hygiene: Periodontology JF American Dental Hygienists Association JO J Dent Hyg FD American Dental Hygienists Association SP 59 OP 59 VO 81 IS 3 A1 Cathryn L Frere YR 2007 UL http://jdh.adha.org/content/81/3/59.abstract AB