European Union countries 87
Europe 47
United States 22
Great Britain 20
Developing countries 14
Greece 4
China 3
England 3
European Union 3
Japan 3
OECD countries 3
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Asia 2
Congresses 2
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Turkey 2
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Bulgaria 1
Canada 1
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Employment 1
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European Community countries 1
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OECD Countries 1
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Romania 1
South Asia 1
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Worcester 1
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