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| 008 | 220421s9999||||xx |||||||||||||| ||und|| | ||
| 020 | _c150/- | ||
| 040 | _aET | ||
| 082 | _a371 VEN N | ||
| 100 |
_aVENKATAIAH N. _93509 |
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| 245 | 0 | _aEDUCATIONAL TECHNOLOGY | |
| 260 |
_bAPH PUB. _aNEW DELHI |
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| 300 | _a234p. | ||
| 500 | _a67672 | ||
| 942 | _cBK | ||
| 999 |
_c73635 _d73635 |
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