Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Attributes and Properties (hierarchy name)
4. [attributes and properties by specific type]
5. form attributes
6. size/dimensions
7. [size/dimensions by specific type]
8. [size for book formats]

Anotations

Scope note:

Book format that results from folding a sheet of paper with three right angle folds, producing a leaf one-eighth the size of the original sheet, and creating 16 pages. The resulting untrimmed page size would be 12 1/2 by 9 1/2 inches. The term itself is frequently coupled with a paper size.