| 000 | 00323nam a2200133Ia 4500 | ||
|---|---|---|---|
| 100 | _aWadsworth,Barry J. | ||
| 020 | _a0-582-28425-2 | ||
| 942 | _cBK | ||
| 654 | _a | ||
| 245 | _aPiaget's theory of cognitive and effective development | ||
| 260 |
_aNew York _bLongman _c1971 |
||
| 082 | _a155.413 | ||
| 300 |
_c21cm _axii,238 |
||
| 999 |
_c402815 _d402815 |
||
| 041 | _aeng | ||