| 000 | 00518nam a2200145 a 4500 | ||
|---|---|---|---|
| 008 | 121119s1980 xx || ||||||| |d | ||
| 020 | _a9231016938 | ||
| 100 | 1 | _aUNESCO | |
| 245 | 0 | 0 | _aThe economics of new educational media |
| 260 | _c1980 | ||
| 260 | _bUnited Nations Educational, Scientific and Cultural Organization | ||
| 500 | _a<p>SSC B05230</p><ul><li>Original title: The economics of new educational media vol. 2 : cost and effectiveness.</li></ul> | ||
| 650 | 7 |
_aEDUCATIONAL TECHNOLOGY _2unbist |
|
| 942 | _cBK | ||
| 999 |
_c2569 _d2569 |
||