TY  - BOOK
AU  - Biber, Douglas 
AU  - Conrad, Susan
AU  - Leech, Geoffrey
TI  - Longman student grammar of spoken and written English: Douglas Biber
SN  - 978058223726
U1  - 425 B47112s 
PY  - 2002///
CY  - Noida
PB  - Pearson Education
KW  - English language
KW  - Grammar
KW  - Written English
KW  - Usage
KW  - Spoken English
ER  -