Media type: E-Article Title: Preface Contributor: Schroeder, Hubert E. imprint: Wiley, 1997 Published in: Periodontology 2000 Language: English DOI: 10.1111/j.1600-0757.1997.tb00092.x ISSN: 0906-6713; 1600-0757 Keywords: Periodontics Origination: Footnote: