Sydamerika

by Kaudern, W.

A study of the Siriono Indians

by Rydén, Stig
Published 1941

Algunos mitos de los ese´ejja del oriente boliviano

by Verna, María Alejandra

Mataco-English and English-Mataco dictionary : (with gramatical notes)

by Hund, Richard J.
Published 1937

Sobre dos rituales de los ayoreo del Chaco Boreal

by Mashnshnek, Celia Olga

Origin of the Indian civilizations in South America

by Nordenskiöld, Erland

El daño mediante la palabra entre los ayoreo del Chaco Boreal

by Idoyaga Molina, Anatilde