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 form]
8. graphic document genres
9. cartographic materials
10. maps (documents)
11. [maps by form]

Narrower term/s

• location maps

Anotations

Scope note:

Maps showing movement of materials, the direction or route followed being indicated by a line representing the railway, waterway, or other route concerned, while the width of the line represents the quantity of material conveyed.