TY  - GEN
AU  - Swan , Michael
TI  - Practical English usage
SN  - 9780194389266
U1  - 428 
PY  - 1980///
CY  - New York
PB  - Oxford Univity press
KW  - ENGLISH GRAMMAR
KW  - ENGLISH USAGE
KW  - PHONETIC ALPHABET
ER  -