TY  - BOOK
AU  - Koll, Hilary
TI  - Practise percentages :  KS3 age 11-14 
SN  - 978 0 340 94290 1
U1  - J510 76 KOL 
PY  - 2007///
CY  - London 
PB  -  Hodder Murray
KW  - MATHEMATICS STUDY AND TEACHING PRIMARY
ER  -