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• www.persistent-identifier.de
  to netzpublikation DNB URN Persistent_Identifier identifier persistent by kormoran and 3 other people on Jul 21, 2008, 9:04 PM
• www.persistent-identifier.de
  Website des DNB zu URNs.
  to BMBF Persistent_Identifier DNB URN by bilbo_d and 3 other people on Aug 27, 2007, 1:00 PM
• www.persistent-identifier.de
  to identifier persistent netzpublikation dnb urn by paul and 3 other people on Mar 14, 2007, 12:32 PM

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