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This is to certify that your paper entitled «The fourth environment, the new approach regard-ing improvement of the child-friendly level of neighborhood associations (case study: organizing and redesigning of Bagh-e-Feyz neighborhood in Tehran).» was indexed with 17 pages, in the CIVILICA citation database, code COI:ICONFAAA04_023, after evaluation and approval of the referees of the "Fourth International Conference on Art and Architecture 2021.

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.