TY  - BOOK
AU  - MARK, Ibbotson
AU  - Mark
TI  - Cambridge English for Engineering Student's Book
SN  - 9780521715188
PY  - 2008///
CY  - new york
PB  - Cambridge
UR  - http://41.111.198.133/Z/ENG.004.2.12.pdf
ER  -