| 000 | 00434nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 131223s9999 xx 000 0 und d | ||
| 040 | _aISI KOLKATA | ||
| 041 | _aEnglish | ||
| 082 |
_a371.26 _bRb-68-47 |
||
| 100 | _aRothenberg B B | ||
| 245 | _aConservation of number among four and five year old children | ||
| 260 | _c1968 | ||
| 440 | _aE T S. Princeton: research bulletin; no 47 | ||
| 650 | _aEducational tests | ||
| 942 | _cBK | ||
| 999 |
_c92451 _d92451 |
||