TY  - BOOK
AU  - Christopher  D. Manning, Prabhakar Raghavan and Heinrich schutze
TI  - Introduction to  information  retrieval : A textbook for  web  Era information  retrieval 
SN  - 9780521865715
PY  - 0000///72008///
PB  - Cambridge  University  press
N1  - Web search, text classification.
ER  -