TY  - BOOK
AU  - Duckworth,Michael
AU  - Gude,Kathy
TI  - Countdown : : to first certificate / 
SN  - 0194533522 (student's book)
PY  - 2001///-2002
CY  - Oxford : 
PB  - Oxford University Press, 
KW  - Lenguas Extranjeras
N1  - reig; Contiene:; V. 1.; Student's book (9th impr., 2002) -; V. 2.; Workbook (5th impr., 2001)
ER  -