| 000 | 00340nam a2200133Ia 4500 | ||
|---|---|---|---|
| 100 | _aArya, S. C. | ||
| 365 | _b80 | ||
| 942 | _cBK | ||
| 654 | _a | ||
| 245 | _aDevelopment of scientific concepts among children | ||
| 260 |
_aAgra _bParas printers # National Psychological Corporation _c1987 |
||
| 082 | _a155.418 | ||
| 300 |
_bHb _a(14), 160 |
||
| 999 |
_c416815 _d416815 |
||
| 041 | _aeng | ||