TY  - BOOK
AU  - Swan,H.A.
AU  - Swan,Ruth
TI  - Of course!
SN  - 0140808574 (Student'sbook)
AV  - PE1128  
PY  - 1988///
CY  - London
PB  - Penguin
KW  - English language
KW  - Study and teaching
KW  - Foreign speakers
ER  -