TY  - BOOK
AU  - Nation,Doreen
AU  - Siderman,Sheila
TI  - Problem solving with ratio and proportion
AV  - QA11.S568.P763 2000 
PY  - 2000///
CY  - Chicago, Illinois
PB  - Creative Publications
KW  - Problem solving
KW  - Study and teaching (Elementary)
KW  - Ratio and proportion
N1  - "Catalog #10874"--T.p. verso; 2
ER  -