Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. information artifacts
7. [information artifacts by function]
8. identifying artifacts
9. identification numbers and codes

Anotations

Scope note:

In bibliography, eight-digit numbers that provides a concise and unambiguous identification code for serial publications. Unlike the International Standard Book Number (ISBN), this number’s only significance is its unique identification of a particular publication; it does not record such characteristics as subject, language, or publisher. The ISSN is used by librarians, authors, publishers, and subscription services for such various purposes as administration, copyright, ordering, and inventory control.