Introduction Michael Petzet (Author) PDF Identifiers (Article) DOI: https://doi.org/10.11588/hr.2001.0.21951 Identifiers (Files) URN: http://nbn-resolving.de/urn:nbn:de:bsz:16-hr-219517 (PDF) Statistics Issue H@R 2001/2002 Section Einleitung Language en License