Proceedings of the 1st European Workshop on Periodontology : Charter House at Ittingen Thurgau, Switzerland February 1-4, 1993 /
European Workshop on Periodontology(1st :1993 :Ittingen, Switzerland)
Lang, Niklaus P.(Niklaus Peter)
Karring, Thorkild.
London : Quintessence,
c1994.
Periodontics