TY  - BOOK
AU  - Deborah, Barton
TI  - Essential Mathematics for IGCSE : : Extended Teachers Resource Kit / 
SN  - 978199136209
AV  - QA 37.5 .B293e3 2012
PY  - 2012///.
CY  - United Kingdom : 
PB  - Oxford University Press, 
ER  -