TY  - BOOK
AU  - Richards, Jack C
AU  - Bohlke, David
TI  - Four corners 4 : Student's book - 2012
SN  - 9780521127714
U1  - 428.24 
PY  - 2012///
CY  - Cambridge
PB  - Academic Press
KW  - English language
KW  - Textbooks for foreign speakers
N1  - 006664; F 1008
ER  -