International Standard Book Number in 1965, has – 340 indicating the publisher, 01381 their serial number, and 8 being the check digit. This can be converted to ; the check digit does not need to be re-calculated. Since 1 January 2007, ISBNs have contained 13 digits, a format that is compatible with "Bookland" European Article Number EAN-13s. An ISBN is assigned to each edition and variation (except reprintings) of a book. For example, an ebook, a paperback, and a hardcover edition of the same book would each have a different ISBN. The ISBN is 13 digits long if assigned on or after 1 January
What Lies Ahead on AMC. It received 7.3 million viewers and attained a 4.8HH rating, breaking the record for the most-watched drama in the history of cable television. It received the second highest viewership of the week ending October 16, scoring higher than "Jersey Shore" but less than a 2011 NFL season game between the Detroit Lions and the Chicago Bears. "What Lies Ahead" achieved similar feats, attaining a 3.8 rating—translating to 4.8 million viewers—in the 18-49 demographic, according to Nielsen ratings. In the 25–54 demographic, it garnered 4.2 million viewers. Total viewership after two encore presentations was 11 million viewers, an increase