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Pages: 20
Type: BOOK - Published: 1963 - Publisher:
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Type: BOOK - Published: 1967 - Publisher:
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Type: BOOK - Published: 1963 - Publisher:
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Type: BOOK - Published: 1967 - Publisher:
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Pages: 160
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Type: BOOK - Published: 2006-05-02 - Publisher: Walter de Gruyter
Since publication of the previous (fourth) edition of this handbook by UNESCO in 1978, drastic technological progress and very important changes in the politica