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This is to certify that your paper entitled «Very large floating structure: A concept of ecological sustainability» was indexed with 16 pages, in the CIVILICA citation database, code COI:ICOHACC02_214, after evaluation and approval of the referees of the "The Second International Conference on Man, Architecture, Civil Engineering and the City held in Tabriz 2017.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.