Overview#
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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