id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
en-wikipedia-org-572		International Standard Book Number - Wikipedia			.html	text/html	7977	1350	78	International Standard Book Number A 13-digit ISBN, 978-3-16-148410-0, as represented by an EAN-13 bar code The initial ISBN identification format was devised in 1967, based upon the 9-digit Standard Book Numbering (SBN) created in 1966. The ISBN registration group identifier is a 1to 5-digit number that is valid within a single prefix element (i.e. one of 978 or 979),[15]:11 and can be separated between hyphens, such as "978-1-...". The original 9-digit standard book number (SBN) had no registration group identifier, but prefixing a zero (0) to a 9-digit SBN creates a valid 10-digit ISBN. The web site of the ISBN agency does not offer any free method of looking up publisher codes.[45] Partial lists have been compiled (from library catalogs) for the English-language groups: identifier 0 and identifier 1. "International Standard Book Numbering (ISBN) System original 1966 report". ISO 2108: International Standard Book Number (ISBN) ISO 2108: International Standard Book Number (ISBN)	./cache/en-wikipedia-org-572.html	./txt/en-wikipedia-org-572.txt