| 000 | 00331nam a2200145Ia 4500 | ||
|---|---|---|---|
| 020 | _a0003187306 | ||
| 082 |
_a513 _bDUN |
||
| 100 |
_aDuncan, John _9199731 |
||
| 245 |
_aNew mental arithmetic _cJohn Duncan |
||
| 260 |
_aLondon: _bCollins, _c1970, |
||
| 300 | _b127p. | ||
| 546 | _aeng | ||
| 650 |
_aArithmetic _947008 |
||
| 942 | _cBK | ||
| 999 |
_c20502 _d20502 |
||