TY  - BOOK
AU  - Bybee Joan
TI  - Evolution of grammar :  tense , aspect and modality in the languages of the world
U1  - P, N4 
PY  - 1994///
CY  - Chicago
PB  - Univ Of Chicago     
KW  - LINGUISTICS
N1  - Bib 357-75p; Includes index
ER  -