| 000 | 003610000a22001450004500 | ||
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| 008 | 140223b1959 xxu||||| |||| 00| 0 eng d | ||
| 041 | _aEng | ||
| 080 | _aT:3A J9 | ||
| 082 | _aT:3A J9 | ||
| 245 | _aUnesco source book for science teaching. | ||
| 260 |
_aParis _bUnesco _c1959 |
||
| 650 | _aEducation | ||
| 650 | _aTeaching Technique | ||
| 906 | _aUnesco | ||
| 999 |
_c104218 _d104218 |
||