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. document genres
7. [documents by function]
8. instructional materials
9. guidebooks

Anotations

Scope note:

Manuals intended to be taken into the "field," i.e., in natural environments, and containing information or pictures to aid in the identification and disambiguation of flora, fauna, and other objects of natural occurrence, such as minerals.