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- 250th Anniversary Carsten Niebuhrs Expedition
- Denmark, 2011.05.04
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- UCI Road World Championships
- Denmark, 2011.08.04
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- Coffee Ceremonies
- Ethiopia, 2011.12.20
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- Definitive issue, Marianne. The art engraved on Arches paper
- France, 2011.07.01
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- Special Olympiad
- Greece, 2011.03.18
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- Green living
- Hong Kong, 2011.04.14
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- Jón Sigurðsson, 200th birth anniversary
- Iceland, 2011.06.17
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- Renewable energy resources
- Ireland, 2011.08.05
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- 60th Anniversary of local governments. Toyama
- Japan, 2011.06.15
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- 75 years of the National Trust for Jersey
- Jersey, 2011.08.03
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- Jersey Architecture: Mills
- Jersey, 2011.10.11
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- Old mills
- Kosovo, 2011.11.02
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- Renewable Energy, 2nd issue
- Liechtenstein, 2011.03.14
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- 140th Anniversary of Kiang Wu Hospital Charitable Association
- Macau, 2011.10.28
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- Spices
- Malaysia, 2011.03.28
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- Renewable energy
- Monaco, 2011.01.20
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- Copper Art
- Morocco, 2011.06.16
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- Postcrossing.com
- Netherlands, 2011.10.14
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- Aqui Há Selo - Children's Painting Competition
- Portugal, 2011.02.17
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- Spirit of Giving
- Singapore, 2011.01.24
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- Greetings From YourSingapore
- Singapore, 2011.09.14
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- Art on stamps
- Slovakia, 2011.12.13
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- Medieval Monasteries
- Slovenia, 2011.03.25
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- Industrial environments - Mills
- Sweden, 2011.03.24
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- Natural power
- Sweden, 2011.03.24
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- Bike Paths of Taiwan
- Taiwan, 2011.11.08
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- Water mills of Ukraine
- Ukraine, 2011.12.28
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- Europa'CEPT: Forests. International Year of Forests
- Ukraine, 2011.12.20
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- The 90th Anniversary of the Postage Stamps of Ukrainian People’s Republic
- Ukraine, 2011.09.12
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- 150th anniversary of Kansas statehood
- United States of America, 2011.01.27
