| 000 | 00426nam a2200169Ia 4500 | ||
|---|---|---|---|
| 008 | 180424s9999 xx 000 0 und d | ||
| 084 | _a371.3 B1 | ||
| 100 | _a"Bhatnagar, S" | ||
| 245 | 0 | _aEducation and Communication Technology | |
| 250 | _a\\198800ENGGPSX | ||
| 260 | _aEss Ess Publications | ||
| 260 | _b1988 | ||
| 260 | _cNew Delhi | ||
| 300 | _axxv+298p | ||
| 500 | _aincludes index and biblioraphy | ||
| 942 | _cBK | ||
| 999 |
_c50816 _d50816 |
||