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STW Thesaurus for Economics
The thesaurus provides vocabulary on any economic subject: about 6,000 standardized subject headings and about 18,000 entry terms to support individual keywords. You can also... -
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... -
Open Library
About One web page for every book ever published. It's a lofty, but achievable, goal. To build it, we need hundreds of millions of book records, a brand new database... -
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...