TY  - BOOK
AU  - Ur,Penny
AU  - Swan,Michael,series ed.
TI  - Grammar,  Practice Activities,  
SN  - 521586488
U1  - 425 
PY  - 1988/// (1996 printing)
CY  - Cambridge
PB  - Cambridge University Press
KW  - English Language - Study and Teaching
ER  -