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World science report
UNESCO - Paris : UNESCO Publ.; Paris : Elsevier; 1993: London … - 1.1993; 2.1996; 3.1998
Persistent link: https://www.econbiz.de/10000536166
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Unesco and its programme
UNESCO - Paris : Unesco - 1.1950 - 36.1976[?]
Persistent link: https://www.econbiz.de/10011328765
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Arid zone research
UNESCO - Paris : Unesco - 4.1954 -
Persistent link: https://www.econbiz.de/10010445991