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B3Kat - Library Union Catalogues of Bavaria, Berlin and Brandenburg
Joint Union Catalogue of 180 academic libraries in the german states of Bavaria, Berlin and Brandenburg. The data contains descriptions of 25Mio. titles and 58Mio. holdings... -
CrossRef DOI Resolver
Digital Object Idenfiers (DOI) are a persistent identifier strategy used by around 3,000 publishers to identify their documents: mostly scholarly publications. An example of a...