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  2. Online public access catalog - Wikipedia

    en.wikipedia.org/wiki/Online_public_access_catalog

    Online public access catalog. The online public access catalog ( OPAC ), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.

  3. Library catalog - Wikipedia

    en.wikipedia.org/wiki/Library_catalog

    The card catalog was a familiar sight to library users for generations, but it has been effectively replaced by the online public access catalog (OPAC). Some still refer to the online catalog as a "card catalog". Some libraries with OPAC access still have card catalogs on site, but these are now strictly a secondary resource and are seldom updated.

  4. Catalog number (music) - Wikipedia

    en.wikipedia.org/wiki/Catalog_number_(music)

    Catalog number 811 767-1, used by RSO Records, next to the center hole on a vinyl LP record. A catalog number is an identification number assigned to a music release by a record label. Catalog numbers on music releases goes back to the early 20th century, around the same time as the 10" shellac records. [when?

  5. Köchel catalogue - Wikipedia

    en.wikipedia.org/wiki/Köchel_catalogue

    Köchel catalogue. The Köchel catalogue (German: Köchel-Verzeichnis) is a chronological catalogue of compositions by Wolfgang Amadeus Mozart, originally created by Ludwig Ritter von Köchel, in which the entries are abbreviated K. or KV. Its numbers reflect the ongoing task of compiling the chronology of Mozart's works, and provide a ...

  6. Library of Congress Control Number - Wikipedia

    en.wikipedia.org/wiki/Library_of_Congress...

    The Library of Congress Control Number ( LCCN) is a serially based system of numbering cataloged records in the Library of Congress, in the United States. It is not related to the contents of any book, and should not be confused with Library of Congress Classification (LCC).

  7. Catalogues of classical compositions - Wikipedia

    en.wikipedia.org/wiki/Catalogues_of_classical...

    A symbol is chosen to represent the catalogue as a whole, and this is usually the initial of the author's or the composer's surname, or an abbreviation of the title of the catalogue itself. In a small number of cases, different symbols apply to different parts of the catalogue. Among the most famous examples of this are:

  8. Catalogue number - Wikipedia

    en.wikipedia.org/wiki/Catalogue_number

    A catalogue number ( British English) or catalog number ( American English) may refer to: Any number used to identify an item in a catalog (disambiguation), including: Accession number (disambiguation), in libraries and museums. Auction catalogue. Catalog number (music), a number assigned by a record label. Catalog number (commercial products ...

  9. WorldCat - Wikipedia

    en.wikipedia.org/wiki/WorldCat

    OCLC number. 756372754. WorldCat is a union catalog that itemizes the collections of tens of thousands of institutions (mostly libraries ), in many countries, that are current or past members of the OCLC global cooperative. [3] It is operated by OCLC, Inc. [4] Many of the OCLC member libraries collectively maintain WorldCat's database, the ...