Unique Country Code


Unique Country Code (UCC) has been allocated since the 1980s within the European Article Number (EAN) as "country code" 978 (and later 979) for EAN identifiers of published books, regardless of country of origin, so that the EAN space can catalog books by ISBN rather than maintaining a redundant parallel numbering system.

This is informally known as "Bookland". The prefix 979 with first digit 0 is used for International Standard Music Number (ISMN) and the prefix 977 indicates International Standard Serial Number (ISSN).

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