TY  - BOOK
AU  - Rodda, George
TI  - Back to basics, bk.1: math, for 9-10 year olds 
SN  - 1-85758-101-6
AV  - TR 372.7 R685 1990
PY  - 1990///
CY  - London
PB  - Letts Educational
KW  - Mathematics
ER  -