| 000 | 00407nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 021018t1952 000 0 eng d | ||
| 080 |
_a372.7 SPE _b10196 |
||
| 100 | _aSpencer, P.L. | ||
| 245 | 0 |
_aBuilding mathematical concepts in the elementary school _h(Book) |
|
| 260 |
_aNew York _bHenry Holt _c1952 |
||
| 300 |
_a372 p. _c22 cm. |
||
| 650 | _aArithmetic--Study and teaching(Elementary) | ||
| 999 |
_c12420 _d12420 |
||
| 035 | _a10196 | ||