TY  - BOOK
AU  - Biber, Douglas 
AU  - Conrad, Susan
AU  - Leech, Geoffrey 
TI  - Longman student grammar of sopken and written english
SN  - 9788131733394
U1  - 485 
PY  - 2009///
CY  - England 
PB  - Pearson Educations 
N1  - Includes glossary and index
ER  -