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 function]

Anotations

Scope note:

Bibliographical descriptions of the physical composition of a book or book-like object, or critical comparisons of manuscripts or editions in order to ascertain the correct text, or the perfect condition of a particular copy.