| 000 | 00372nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 180710s9999 xx 000 0 und d | ||
| 020 | _a168967 | ||
| 082 |
_a613.9 _bTRA |
||
| 100 | _aTRACHTENBERG | ||
| 245 | 4 | _aThe trachtenberg speed system of basic mathematics | |
| 260 |
_aCalcutta _bRupa pub. _c1992 |
||
| 300 | _a270 p. | ||
| 650 | _aMental arithmetric | ||
| 942 | _cS | ||
| 999 |
_c88482 _d88482 |
||