Columbia subject headings:
Harvard subject headings:
Multilingualism--Congresses.
Multilingualism--French-speaking countries--Congresses.
Sociolinguistics--Congresses.
Sociolinguistics--French-speaking countries--Congresses.
Sustainable urban development--Congresses.
Sustainable urban development--French-speaking countries--Congresses.
Urban dialects--French-speaking countries--Congresses.
Princeton subject headings:
Multilingualism--Congresses.
Multilingualism--French-speaking countries--Congresses.
Sociolinguistics--Congresses.
Sociolinguistics--French-speaking countries--Congresses.
Sustainable urban development--Congresses.
Sustainable urban development--French-speaking countries--Congresses.
Urban dialects--French-speaking countries--Congresses.