TY  - BOOK
AU  - Lloyd,Mark
AU  - Day,Jeremy
TI  - Active grammar level 3: with answers 
SN  - 9780521152501 (pbk.)
PY  - 2011///
CY  - Cambridge
PB  - Cambridge University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Grammar
KW  - Problems, exercises, etc
ER  -