| 000 | 00614nam a22001817a 4500 | ||
|---|---|---|---|
| 008 | 230403b |||||||| |||| 00| 0 eng d | ||
| 020 | _a81-85316-38-4 | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 080 |
_a159.922.72:165.191 _bN3 |
||
| 100 | 1 |
_aArya, S C _96122 |
|
| 245 |
_aDevelopment of scientific concepts among children: _bBased on piagetian tasks |
||
| 260 |
_aAgra: _bNational Psychological Corporation, _c1993 |
||
| 300 | _a159p. | ||
| 490 | _aBhargava research monograph series no. 35 | ||
| 650 | _aScientific concepts | ||
| 653 | _aConservation of mass | ||
| 942 |
_2udc _cBK |
||
| 999 |
_c17799 _d17799 |
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