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_c19713 _d19713 |
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| 003 | BD-DhPL | ||
| 005 | 20191211133337.0 | ||
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| 020 | _a92-3-101817-5 | ||
| 040 |
_cBD-DhPL _aBD-DhPL _beng _dBD-DhPL |
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| 082 | _a341.107 / U3w | ||
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_aUNESCO. _9273560 |
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| 245 | _aWorld problems in the classroom. | ||
| 260 |
_aParis : _bUnesco, _c1981. |
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| 300 |
_a61 p. ; _c27 cm. |
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| 440 |
_aEducational studies and documents, 41. _9273561 |
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| 508 | _a300 | ||
| 650 |
_a United Nations -- Study and teaching. _9273562 |
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| 942 |
_2ddc _cBK |
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