The oldest working refinery in the world is at--

আন্তর্জাতিক বিষয়াবলি
World Record

প্রশ্নঃ The oldest working refinery in the world is at--

  • ক. Digboi
  • খ. Baroda
  • গ. Koyali
  • ঘ. Guwahati

সঠিক উত্তরঃ

Digboi
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