TY  - BOOK
AU  - Olsen, Amy E. ;
TI  - Active vocabulary:  general and academic words
SN  - 0-321-05498-9
U1  - Ref. 428 
PY  - 2002///
CY  - United States of América
PB  - Longman Publishers
KW  - INGLES VOCABULARIO
ER  -