Columbia subject headings:
Bridges--Pilcomayo River.
Indians of South America--Argentina--Formosa (Province)--Government relations.
Indians of South America--Argentina--Salta (Province)--Government relations.
MERCOSUR (Organization)
Pilcomayo River--Water rights.
Water rights--Argentina--Formosa (Province)
Water rights--Argentina--Salta (Province)
Harvard subject headings:
Indians of South America--Argentina--Pilcomayo River--Government relations.
MERCOSUR (Organization)
Pilcomayo River (Argentina)
Princeton subject headings:
Bridges--Pilcomayo River.
Indians of South America--Argentina--Formosa (Province)--Government relations.
Indians of South America--Argentina--Salta (Province)--Government relations.
MERCOSUR (Organization)
Pilcomayo River--Water rights.
Water rights--Argentina--Formosa (Province).
Water rights--Argentina--Salta (Province).