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পরমাণুর নিউক্লিয়াসে কি থাকে?
নিউট্রন ও প্রোটন
BRRI= Bangladesh Rice Research Institute
BRRI is located in Joydevpur, Gazipur.
FAO= Food & Agricultural Organization
United Nations Educational, Scientific and Cultural Organization
Random Access Memory
BADC=Bangladesh Agricultural Development Corporation