William R. Merrifield / William RMerrifield
Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
These studies represent the following languages: Paumarí, Cubeo, Tucano, Kayabí, and Suruí, spoken in Brazil, and Coguí, Guahibo, and Coreguaje, spoken in Colombia.