Assembling tutorial in Bengali Language first time by Science Activity Channel: YouTube : কিভাবে ফোল্ডস্কোপ (কাগজের অনুবীক্ষণ 140X ) বানাবেন । Assembling of Foldscope: 140X Microscop
Sep 08, 2018 • 9:32 AM UTC
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140x Magnification
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gmandal
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