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9843 |
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170722s9999 xx 000 0 und d |
| 245 |
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|a Unesco thesaurus :
|b A structured list of descriptors for indexing and retrieving literature in the fields of education science,social science,culture and communication.2v /
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| 260 |
|
|
|a Unesco :
|c 1977.
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| 300 |
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|a 486 p.
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|a Documentation
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| 653 |
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|a Library Science
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| 700 |
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|a Aitchison, Jean
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