| 000 | 00437nam a2200169Ia 4500 | ||
|---|---|---|---|
| 005 | 20250619145004.0 | ||
| 008 | 250619s9999||||xx |||||||||||||| ||und|| | ||
| 020 |
_a9231016938 _cF 48 |
||
| 040 | _aMAIN | ||
| 041 | _aEnglish | ||
| 082 |
_a330 _bECO |
||
| 245 | 4 |
_aThe economics of new educational media _b: cost and effectiveness |
|
| 260 |
_aParis _b; Unesco _c, 1980 |
||
| 300 |
_a316p. _b, V.2 |
||
| 650 | _aEconomics | ||
| 942 | _cBK | ||
| 999 |
_c118025 _d118025 |
||