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مدیریت ریسک - معدن زغال سنگ - رفتار ایمنی - کنترل - هشدار زود هنگام - اقدامات متقابل - کلمات کلیدی انگلیسی دانلود رایگان 2 صفحه اول مقاله لاتین (PDF)
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دانلود کتاب در زمینه طراحی تونل های معادن ذغال سنگ Rock Engineering of Underground Coal Mining Follow this link to download "Rock Engineering of Underground Coal Mining" which is related to design …
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