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Vasileva, Elka and Ivanova, Daniela and Tipova, Nina and Stefanov, Stilian (2012): Устойчиво потребление в България, Издателски комплекс – УНСС, София, 2012 (Sustainable consumption in Bulgaria, Publishing complex - University of National and World Economy, Sofia, 2012), ISBN 978-954-644-389-2. Published in:
