[20 years of the Swiss Society of Periodontology: a look-back. Interview by Kurt Venner].
Baehni
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Lang
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Engelberger
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D049673:History, 20th Century; D010517:Periodontics / Q000266:history*; D012953:Societies, Dental / Q000266:history*; D013557:Switzerland
20 Jahre SGP: eine Rückschau.