TY  - BOOK
AU  - Cowan,Ron
TI  - The teacher's grammar of English: a course book and reference guide 
SN  - 9780521141758
AV  - PE1128 .A2C69347 2008
PY  - 2008///
CY  - Cambridge
PB  - Cambridge University Press
KW  - English language
KW  - Study and teaching
KW  - Foreign speakers
ER  -