Bhowmick, Trisrota2018-09-172018-09-172018-09http://hdl.handle.net/123456789/1380enCoal explorationPetrographyAsh fusion behaviourHardgrove grindability indexPh.DAGLPH1323Mineralogical and petrographical characterization of mineral rich non- coking coals from selected lower Gondwana coal basins of IndiaThesis