Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Object Genres (hierarchy name)
4. object genres (object classifications)

Anotations

Scope note:

Generally, refers to all physical objects or physical phenomena not produced by humans. The universe of physical objects is often divided into realia, which are naturally occurring objects and phenomena, and "artifacts, " which are human-made objects and phenomena. Specifically, in library classification systems, realia are physical objects that are not the books, periodicals, or sound recordings typically cataloged by libraries. Specifically, in education, realia are objects from nature, home, or otherwise from real life that are used in classroom instruction.