খনিজ সম্পদ
প্রাকৃতিক গ্যাস
তেল
চীনা মাটি
চুনাপাথর
কয়লা খনি
তেজস্ক্রিয় বালু
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আমাদের অল-ইন-ওয়ান মোবাইল অ্যাপের মাধ্যমে সীমাহীন শেখার সুযোগ উপভোগ করুন।
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1 hour ago
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