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• International Standard Book Number
  ...he standard. Books published in rare languages typically have longer group identifiers.<ref name=hail/> ...a zero (0) as prefix to a 9-digit SBN creates a valid 10-digit ISBN. Group identifiers form a [[prefix code]]; compare with [[country calling codes]].
  33 KB (4,545 words) - 12:17, 21 January 2013