Columbia subject headings:
Harvard subject headings:
Guarani languages--Germany--History--Congresses.
Guarani languages--History--Congresses.
Tupi-Guarani languages--History--Congresses.
Typology (Linguistics)--Congresses.
Princeton subject headings:
Guarani Indians--Languages--Congresses.
Guarani language--Congresses.
Tupi-Guarani languages--Congresses.