TY  - BOOK
AU  - Bird Steven
AU  -  Klein Ewan
AU  -  Loper Edward
TI  - Natural language processing with Python
U1  - D6,8(B289PY), P9  P9;3 
PY  - 2009///
CY  - New Delhi
PB  - Shroff Publishers     
KW  - I I C
ER  -