Columbia subject headings:
Language policy--Southern Cone of South America--Congresses.
Sociolinguistics--Southern Cone of South America--Congresses.
Southern Cone of South America--Languages--Political aspects--Congresses.
Harvard subject headings:
Ethnicity--Southern Cone of South America--Congresses.
Languages in contact--Southern Cone of South America--Congresses.
Spanish language--Political aspects--Southern Cone of South America--Congresses.
Spanish language--Social aspects--Southern Cone of South America--Congresses.
Princeton subject headings: