| 000 | 00506nam a2200181Ia 4500 | ||
|---|---|---|---|
| 999 |
_c41772 _d41772 |
||
| 005 | 20220112113452.0 | ||
| 008 | 180712s9999 xx 000 0 und d | ||
| 020 | _a9231014234 | ||
| 082 |
_a371.3 _bECO _223 |
||
| 110 |
_982161 _aUNESCO |
||
| 245 | _aTHE ECONOMICS of new educational media:present status of research and trends | ||
| 260 |
_aParis _bUNESCO _c1977 |
||
| 300 | _a200 p.- | ||
| 440 | _aEducational methods and technigues | ||
| 500 | _aIncludes glossary | ||
| 650 | _aTeaching | ||
| 942 | _cS | ||