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For Developers - The National Science Digital Library

http://nsdl.org/contribute/?pager=developers An overview of information links for resource and collection contributors to NSDL and developers wishing to learn more about our technical services...

About OPDS

The Open Publication Distribution System (OPDS) Catalog specification is a syndication format for electronic publications based on Atom RFC4287 and HTTP RFC2616 . All of the formal versions of the OPDS Catalog specifications are available on the specifications page . What are OPDS Catalogs? http://opds-spec.org/about/