| 000 | 00340 a2200133 4500 | ||
|---|---|---|---|
| 020 | _a8176484938 | ||
| 041 | _aeng | ||
| 082 | _a371.33 | ||
| 100 |
_aRao, V.K. _940680 |
||
| 245 | _aEducational teachnology | ||
| 260 |
_aNew Delhi : _bA.P.H. Publishing Corporation _c20004. |
||
| 300 |
_av, 407p. _c22 cm. |
||
| 653 | _aEducational teachnology | ||
| 999 |
_c247819 _d247755 |
||