International Standard Serial Number International Standard Serial Number An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication. The ISSN is especially helpful in distinguishing between serials with the same title. ISSN are used in ordering, cataloging, interlibrary loans, and other practices in connection with serial literature. The ISSN system was first drafted as an International Organization for Standardization (ISO) international standard in 1971 and published as ISO 3297 in 1975. ISO subcommittee TC 46/SC 9 is responsible for maintaining the standard. When a serial with the same content is published in more than one media
What Lies Ahead Lies Ahead" was the last episode written by Darabont, who had been fired from the show in July 2011. It was first previewed at the San Diego Comic-Con on July 22, 2011. Production commenced in June 2011. Unlike the first season, most of the principal photography for "What Lies Ahead" took place outside the city limits of Atlanta, Georgia; filming took place in Smyrna and Henry County, Georgia. Before its first airing, several segments were announced and broadcast, including a six-part internet series and a live after-show hosted by Chris Hardwick. "What Lies Ahead" was well received by television critics,