Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by physical form]
7. [fiber and fiber by product]
8. [fiber by product]
9. paper (fiber product)
10. [paper by composition or origin]

Anotations

Scope note:

Paper made from chemical wood pulp, which is pulp in which lignin has been removed from the wood, making the cellulose less likely to yellow and embrittle with aging. For paper that contains no free acids, use "acid-free paper."