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This is to certify that your paper entitled «The Importance of Durability Design of Reinforced Concrete Structures» was indexed with 12 pages, in the CIVILICA citation database, code COI:NCCE07_1236, after evaluation and approval of the referees of the "7th National Congress on Civil Engineering held in Zahedan 2013.

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.