TY  - BOOK
AU  - Hutchinson Tom
AU  -  Waters Alan
TI  - English for specific purpose :  A learning- centred approach
T2  - Cambridge language teaching library
U1  - T:3 (P111), M7-;1 
PY  - 1987///
CY  - Cambridge
PB  - Cambridge university press     
KW  - EDUCATION
ER  -