| 000 | 00435nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 190328s9999||||xx |||||||||||||| ||und|| | ||
| 040 |
_aNITIL _cNITIL |
||
| 082 |
_221st _a507.2 _bU58U |
||
| 110 | _aUnited Nations Educational, Scientific and Cultural Organization | ||
| 245 | 0 | _aUNESCO source book for science teaching | |
| 260 |
_aParis _bUNESCO _c1956 |
||
| 300 | _a218p+ graph | ||
| 650 | _aScience-Study and teaching | ||
| 942 | _cBKS | ||
| 999 |
_c33685 _d33685 |
||