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18.05 : Plovdiv Celebrated Bulgaria’s 70th Anniversary of UNESCO Membe ...

13.02 :

SCIENCE
ADDITIONAL INFORMATION:

Еthics

2011, International Year of Chemistry (IYC)

Natural heritage of Bulgaria

No. 56 by printing out the magazine "World Heritage"

2010 - International Year of Biodiversity

Biodiversity of Bulgaria

UNESCO - the main partner in the conduct of the

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