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
Darts a tree. An old name for a dartboard is "butt"; the word comes from the French word "but", meaning "target". In particular, the Yorkshire and Manchester Log End boards differ from the standard board in that they have no triple, only double and bullseye, the Manchester board being of a smaller diameter, with a playing area of only 25 cm (9.84 in) across with double and bull areas measuring just 4 mm (0.157in.). The London Fives board is another variation. This has only 12 equal segments numbered 20, 5, 15, 10, 20, 5, 15, 10, 20, 5, 15, 10 with