Columbia subject headings:
Harvard subject headings:
Comparative linguistics--Atlases.
Comparative linguistics--Maps.
Grammar, Comparative and general--Morphology--Atlases.
Grammar, Comparative and general--Syntax--Atlases.
Grammar, Comparative and general--Syntax--Maps.
Typology (Linguistics)
World atlas of language structures.
Princeton subject headings:
Atlases.
Comparative linguistics--Atlases.
Comparative linguistics--Maps.
Grammar, Comparative and general--Morphology--Atlases.
Grammar, Comparative and general--Morphology--Maps.
Grammar, Comparative and general--Syntax--Atlases.
Grammar, Comparative and general--Syntax--Maps.
Maps.
Typology (Linguistics)