TY  - BOOK
AU  - Swan, Michael.
TI  - Practical english usage
SN  - 019567989x 
PY  - 2008///
CY  - New Delhi
PB  - Oxford University Press
KW  - English language --Composition and exercises --Study and teaching
KW  - English language --Study and teaching
KW  - English language --Usage
N1  - "Indian Edition"
ER  -