Columbia subject headings:
Harvard subject headings:
Contrastive linguistics.
Grammar, Comparative and general--Grammatical categories.
Grammar, Comparative and general--Phonology, Comparative.
Language and languages--Grammars
Princeton subject headings:
Contrastive linguistics.
Grammar, Comparative and general--Grammatical catagories.
Grammar, Comparative and general--Phonology, Comparative.
Language and languages--Grammars.