Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. plant material
8. [wood and wood by product]
9. [wood by product]
10. lumber
11. [lumber by quality]
12. yard lumber

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by composition
6. inorganic material
7. rock
8. rock by form
9. stone
10. stone by form

Anotations

Scope note:

Stock comprising pieces of material that are small or otherwise of non-standard dimensions. As applied to timber, usually denotes the sectional dimensions (thickness and breadth) in contradistinction to the length, of a square-edged piece of nonstandard dimensions. For a block of stone, a piece measured in all three dimensions.