Columbia subject headings:
Harvard subject headings:
Context (Linguistics)
Grammar, Comparative and general--Negatives--Congresses.
Grammar, Comparative and general--Negatives.
Grammar, Comparative and general--Syntax--Congresses.
Polarity (Linguistics)
Polarity (Linguistics)--Congresses.
Semantics--Congresses
Princeton subject headings:
Context (Linguistics)
Grammar, Comparative and general--Negatives.
Polarity (Linguistics)