TY  - BOOK
AU  - Bird,Steven
AU  - Klein,Ewan
AU  - Loper,Edward
TI  - Natural language processing with Python 
SN  - 978-8184047486
U1  - 005.133  
PY  - 2009///
CY  - Beijing
PB  - O'Reilly
KW  - Python (Computer program language)
KW  - Natural language processing (Computer science)
N2  - This is an introduction to natural language processing, which supports a variety of language technologies, from predictive text and email filtering to automatic summarization and translation
ER  -