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http://blog.okfn.org/2010/05/20/bibliographica-an-introduction/ It’s time to talk a bit about Bibliographica , a new project of the Open Knowledge Foundation. Bibliographica is designed to make it easier for scholars and researchers to share and collect information about work in their field. It provides an open source software platform to create and share semantically rich information about publications, authors and their works.

Open Knowledge Foundation Blog » Bibliographica

Data Packages - CKAN

http://thedatahub.org/dataset The parts of Canada making up the 1996 Settled Area, (or Population Ecumene), represents a selection of the 5984 Census Subdivisions (CSD) as defined by Statistics Canada for the 1996...
Note that this does go from actions that might be best classified as 'triage' into actual curation and processing of the data but I'm going to stick with this title for now. NB Source-centric triage needed such that sources are treated independently, rather than assuming similarity based on shared source format. For example, even though CUL and BL data will be based on the same MARC standard, internal conventions and interpretations will make them as similar as two snowflakes; they'll look similar until you look closely and find a world of difference.

datatriage – Public Domain Works

http://knowledgeforge.net/pdw/trac/wiki/datatriage

Open Biblio (graphic) Projects | Open Bibliographic Working Group and Open Bibliographic Projects

http://openbiblio.net/ Europeana has recently released a new version of its Linked Data Pilot, data.europeana.eu . We now publish data for 2.4 million objects under an open metadata licence: CC0 , the Creative Commons Public Domain Dedication.
http://www.geonames.org/

GeoNames

The GeoNames geographical database covers all countries and contains over eight million placenames that are available for download free of charge.
http://dublincore.org/

DCMI Home: Dublin Core® Metadata Initiative (DCMI)

Brian Sletten & Stéphane Corlosquet: "Embedding Linked Data Invisibly into Web Pages: Strategies and Workflows for Publishing with RDFa"— 24 October 2012

wiki.dbpedia.org : About

DBpedia is a community effort to extract structured information from Wikipedia and to make this information available on the Web. http://dbpedia.org/About
http://xisbn.worldcat.org/xisbnadmin/xoclcnum/api.htm

Web service: xISBN [OCLC - WorldCat Affiliate tools]: xOCLCNUM API

Use this Web service to map book-related identifiers (ISBN, LCCN, OCLC number), based on WorldCat information. Free and subscription versions are available.

Web service: xISSN [OCLC - WorldCat Affiliate tools]: Home

Use this Web service to retrieve a list of International Standard Serial Numbers (ISSNs) associated with a submitted ISSN, based on WorldCat information. http://xissn.worldcat.org/xissnadmin/
http://xisbn.worldcat.org/xisbnadmin/doc/api.htm The xISBN API provides a set of methods corresponding to a single, known ISBN value. All request formats take a list of named parameters. The required parameter method is used to specify the calling method, the required parameter format is used to specify a response format, such as XML, XHTML, JSON, Python or Ruby formats; the optional parameter fl controls what fields to return; the optional parameter library limits search scope to a library or collection.

Web service: xISBN [OCLC - WorldCat Affiliate tools]: API

Follow the OCLC Developer Network: The OCLC Developer Network supports the use of OCLC Web Services—a set of tools and APIs that expose data and services for WorldCat and our member libraries and partner institutions or companies. learn more »

Web Services | OCLC Developer Network

Since previous posts about linking to WorldCat Identities are getting out of date, here's a summary of the current API. There are several ways of linking to Identities: We only do this for names without LCCN's, so you can't just stick an arbitrary name in and expect to get an Identity page back.

Outgoing: Linking to WorldCat Identities

Rights API | www.hathitrust.org

Note: This API has been deprecated and will be phased out in summer 2010. Please use the Bib API instead. HathiTrust partners (and other interested parties) need a way to get information unique to HathiTrust (handle data, rights information) into their own systems.

wiki.dbpedia.org : Online Access

There is a public SPARQL endpoint over the DBpedia data set at http://DBpedia.org/sparql . The endpoint is provided using OpenLink Virtuoso as the back-end database engine. There is a list of all DBpedia data sets that are currently loaded into the SPARQL endpoint.
An ISBN is a unique number assigned to an item by its publisher. Each ISBN is a 10 or 13 digit number.

OCLC Classify -- an Experimental Classification Service