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Citace podle Chicago (17th ed.)Renewable Energy Heating and Cooling: 21 Innovative Projects Supported by the IEE Programme. Brussels: European Commission, Intelligent Energy Executive Agency, 2006.
Citace podle MLA (9th ed.)Renewable Energy Heating and Cooling: 21 Innovative Projects Supported by the IEE Programme. European Commission, Intelligent Energy Executive Agency, 2006.
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