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| 003 | KeNaKNATCOM | ||
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| 020 | _a923102664X | ||
| 040 | _cKNATCOM-UNESCO | ||
| 098 | _a1.50LAY | ||
| 100 | _aLayton David. | ||
| 245 |
_aInnovations in science technology education / _cLayton David(ed). |
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| 260 |
_aParis: _bUNESCO; _c1990. |
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| 300 | _a247 p. | ||
| 490 | _vVol III. | ||
| 650 |
_aScience. _bTechnology. |
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| 942 |
_2UNESCO _n0 _cBK _h1.50LAY _k1.50 _mLAY |
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| 999 |
_c1962 _d1962 |
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