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 physical form]
8. books
9. [books by external form]
10. folded books

Anotations

Scope note:

Folded books developed in Japan and China in which the text block is composed of individual folded sheets, gathered so that the folds are at the back while, at the fore edge, the edge of one leaf of each folded sheet is adhered to the edge of the adjacent leaf. The text block is covered by a single sheet adhered to the first and last leaves but not attached to the spine.