Columbia subject headings:
English language--Study and teaching--Congresses.
Language and education--Congresses.
Language and languages--Study and teaching--Congresses.
Sociolinguistics--Congresses.
Harvard subject headings:
English language--Study and teaching--Congresses
Language and education--Congresses
Language and languages--Study and teaching--Congresses
Sociolinguistics--Congresses.
Princeton subject headings:
English language--Study and teaching--Congresses.
Language and education--Congresses.
Language and languages--Study and teaching--Congresses.
Sociolinguistics--Congresses.