| 000 | 00559nam a2200193 4500 | ||
|---|---|---|---|
| 008 | b xx# eng u | ||
| 040 | _aLB-BrCRDP | ||
| 082 | _a507.8/U56u | ||
| 100 | 1 | _aUNESCO (Paris, France) | |
| 130 | 0 | _lEN | |
| 245 | 1 | 0 |
_aUnesco source book for science teaching _cUNESCO |
| 250 | _arev. and enlarged ed., 2d rev. ed. | ||
| 260 |
_aParis _cc1962 |
||
| 300 |
_a250p. : _bill. , tables ; _c24 cm |
||
| 500 | _aAppendices : p. 225-235. | ||
| 650 |
_aScience _xStudy and teaching |
||
| 942 | _cBK | ||
| 999 |
_c11144 _d11144 |
||