| 000 | 00346nam a2200157Ia 4500 | ||
|---|---|---|---|
| 100 | _aKhan, N. | ||
| 020 | _a978-81-7880-110-0 | ||
| 520 | _aEducational technology | ||
| 365 | _b895 | ||
| 942 | _cBK | ||
| 654 | _a | ||
| 245 | _aEducational technology | ||
| 260 |
_aNew Delhi _bRajat Publications _c2020 |
||
| 082 | _a371.394 | ||
| 300 | _a228 | ||
| 999 |
_c420127 _d420127 |
||
| 041 | _aeng | ||