00458nam 2268350 450000100060000000300230000600500090002900800410003808200120007907200380009102000180012910000220014726000180016924500370018765000380022465000280026268350StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a617.632 athe nature of periodental disease a0-19-261955-1 aDAVID A. WILLIAMS bOXFARD c1992 apathology of periodontal disease athe nature of periodental disease athe normal periodontium