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BERLIN - GERMANY - 09.05.2014 -- Martin Frey, author of the Renewable Energy Travelguide "Deutschland - Eneuerbare Energien Erleben" (Baedeker), here in the Reichstag in Berlin, which has solar cells and heating as well as cooling storage -- PHOTO: CHRISTIAN T JØRGENSEN / EUP-BERLIN.COM<br />
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