Ghosh, Santanu2021-03-162021-03-162021-03http://hdl.handle.net/123456789/1947enCoal metamorphismBituminous coalRaniganj BasinJharia BasinPh.DPH1736AGLOptical and geochemical paradigms of coal metamorphism from bituminous to anthracite with an assessing note on secondary microbial methanogenesis from bituminous rankThesis