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Continue to ChatCheck out this awesome website: https://gsb.portal.gov.bd/site/publications/855a9d79-9502-4a83-bd92-807a2800b98d/Geology-of-Khalaspir-Coal-Basin-Pirganj-Rangpur-bd-by-Md-Nazrul-Islam-Md-Nehal-Uddin-Syed-Ali-Resan-Md-Sultan-Ul-Islam-and-Md-Wazed-Ali-1992