Columbia subject headings:
Harvard subject headings:
Geopolitics--Brazil.
Geopolitics--Rio de la Plata Region (Argentina and Uruguay)
Water resources development--Brazil
Water resources development--Rio de la Plata Region (Argentina and Uruguay)
Princeton subject headings:
Geopolitics--Brazil.
Geopolitics--Río de la Plata Region (Argentina and Uruguay).
Water resources development--Brazil.
Water resources development--Río de la Plata Region (Argentina and Uruguay).