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 produced by folding a sheet using six right angle folds, producing a leaf size of 1/64th the original sheet, and creating 128 pages. Typically, the untrimmed page size is 4 3/4 by 3 1/8 inches. Because of the difficulty in folding a sheet with six right angles, usually more than one sheet is used, and those are inserted into the book.