TY  - BOOK
AU  - Richards,Jack C.
AU  - Hull,Jonathan
AU  - Proctor,Susan
TI  - Interchange  : english for international communication : work book  
SN  - 0521359902
AV  - PE1128 .R527 1991
PY  - 1991///
CY  - USA  
PB  - Cambridge , 
KW  - Ingles
KW  - Texto para extranjeros
ER  -