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:

Identifiers in a numbering system developed to enable the unique identification of textual works, including any content appearing in conventional printed books, audio-books, static e-books or enhanced digital books, as well as content which might appear in a newspaper or journal. Compliant with ISO 21047:2009.