TY  - BOOK
AU  - Davidson,David M.
TI  - Pre-algebra:btools for a changing world
SN  - 981-244-862-4
U1  - 512.9 
PY  - 2005///]
CY  - Singapore
PB  - Pearson Education SOuth Asia
KW  - Algebra
KW  - Problems, exercises, etc
KW  - ALGEBRA, NUMBER THEORY
ER  -