Grubb, Wilfrid Barbrooke <br/><br/>
An unknown people in an unknown land  an account of the life and customs of the Lengua Indians of the Paraguayan Chaco, with adventures and experiences during twenty years' pioneering and exploration amongst them 
by W. Barbrooke Grubb ; edited by H. T. Morrey Jones, with 23 illustrations & 2 maps. 
 - 4th ed. 
 - London  Seeley, Service  1925. 
 - 329 p., [26] leaves of plates  ill., port., map.  20 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lengua Indians.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Chaco Boreal Paraguay