TY  - BOOK
AU  - Frank, Christine
AU  - Rinvolucri, Mario 
TI  - Challenge to think
SN  - 019453250X
U1  - 428.2 
PY  - 1995///
CY  - Oxford
PB  - Oxford University Press
KW  - English language
KW  - Textbooks for foreign speakers
KW  - Study and teaching
KW  - Foreign speakers
N1  - 001270; F 041
ER  -