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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... -
National Agricultural Library Thesaurus
The NAL Thesaurus is an online vocabulary tool of agricultural terms in English and Spanish and is cooperatively produced by the National Agricultural Library, USDA and the... -
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...
