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This is to certify that your paper entitled «تأثیر کلاس‌های UCMAS بر ارتقای چیرگی شناختی، سرعت پردازش و حافظه فعال کودکان» was indexed with 17 pages, in the CIVILICA citation database, code COI:JR_FABAK-10-1_009, after evaluation and approval of the referees of the "Thinking and the Child Vol 10, Issue 1 , Year 2020.

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