TY  - BOOK
AU  - Ritchie Key,Mary
TI  - Language change in south American Indian Languages
U1  - 415 
PY  - 1991///
CY  - Philadelphia Estados Unidos : 
PB  - University of pennsylvania press, 
N1  - Fotocopia; Empastado; Introduction -- Classification and typological problems -- comparative linguistics -- Grammatical matters -- Ethnolinguistics -- Distant relationships
ER  -