Columbia subject headings:
Harvard subject headings:
Chaco (Argentina)--Economic conditions--19th century.
Chaco (Argentina)--History--19th century.
Chaco (Argentina)--Social conditions--19th century.
Indians of South America--Argentina--Chaco--History--19th century.
Indians of South America--Missions--Argentina--Chaco.
Land settlement--Argentina--Chaco--History--19th century.
Land tenure--Argentina--Chaco--History--19th century.
Princeton subject headings:
Chaco (Argentina)--Economic conditions--19th century.
Chaco (Argentina)--Social conditions--19th century.
Indians of South America--Missions--Argentina--Chaco.
Land settlement--Argentina--Chaco--History--19th century.
Land tenure--Argentina--Chaco--History--19th century.