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با توجه به محدودیت فضای ذخیره سازی، فایل های ضبط شده جلسات حداکثر تا یک ماه آینده از روی این سامانه حذف میگردد. لطفا برنامه ریزی فرمائید
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سخنرانی علمی انجمن مکانیک سنگ ایران
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Hamid Reza Nejati (Owner)
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