Columbia subject headings:
Gran Chaco.
Indians of South America--Gran Chaco.
Kerr, John Graham, 1869-1957.
Lepidosiren expedition, 1896-1897.
Natural history--Gran Chaco.
Pilcomayo expedition, 1889-1891.
Scientific expeditions.
Harvard subject headings:
Gran Chaco--Description and travel.
Indians of South America--Gran Chaco
Kerr, John Graham, 1869-1957.
Natural history--Gran Chaco.
Scientific expeditions--Gran Chaco.
Princeton subject headings:
Gran Chaco.
Indians of South America--Chaco, El Gran.
Kerr, John Graham, Sir, 1869-
Natural history--Chaco, El Gran.
Scientific expeditions.