TY  - BOOK
AU  - Swan,Michael
TI  - Practical English usage
SN  - 0194311856 (pbk.) :
AV  - PE1106 .Sw2 1981
U1  - 428.2 19
PY  - 1981///
CY  - Oxford, New York
PB  - Oxford University Press
KW  - English language
KW  - Usage
ER  -