TY  - BOOK
AU  - Swain,Robert L.
AU  - Nichols,Eugene Douglas
TI  - Understanding arithmetic
U1  - 511 
PY  - 1965///
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Number concept
KW  - Arithmetic
KW  - Foundations
KW  - Study and teaching
KW  - Mathematics
KW  - Coordinates
N2  - Explains basic mathematics from number systems and operations through coordinate geometry. Useful for a general overview of elementary school mathematics
ER  -