TY  - BOOK
AU  - Ek,Jan Ate Van
TI  - Threshold level English in a European unit: Credit system f
SN  - 0-13-920505-5
U1  - 428.007 
PY  - 1988///
CY  - Inglaterra
PB  - Prentice Hall
N1  - BIBLIOTECA: UACH-FFYL
ER  -