| 000 | 00502nam a2200193Ia 4500 | ||
|---|---|---|---|
| 999 |
_c13140 _d13140 |
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| 005 | 20220223151944.0 | ||
| 008 | 180712s9999 xx 000 0 und d | ||
| 020 | _a902204238 | ||
| 041 | _aEN | ||
| 082 |
_a510 _bKOR _223 |
||
| 100 | _aNCET | ||
| 245 | _aEducational technology: progress and promise | ||
| 260 |
_aLondon _bNational Council for educational technology _c1971 |
||
| 300 | _a75 p. | ||
| 500 | _aIncludes appendixes. | ||
| 509 | _aNS | ||
| 650 | _aEducational technology | ||
| 942 | _cS | ||