Columbia subject headings:
Arc pair grammar.
Grammar, Comparative and general--Clauses.
Grammar, Comparative and general--Passive voice.
Relational grammar.
Harvard subject headings:
Arc pair grammar.
Grammar, Comparative and general--Clauses.
Grammar, Comparative and general--Passive voice.
Relational grammar.
Princeton subject headings:
Arc pair grammar.
Grammar, Comparative and general--Clauses.
Grammar, Comparative and general--Passive voice.
Relational grammar.