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. document genres
7. [documents by form]

Anotations

Scope note:

Divisions of a book published in parts, especially sections of a lengthy book or series of books, usually reference works, that are issued in parts as they are completed rather than waiting for the entire work to be completed.