The nature of coal / 
Symposium on the Nature of Coal held on February 7-9th in 1959 at CFRI Jeolgora;organised by The Central Fuel Research Institute in Collaboration with the Institute of Fuel (Indian Section) 
 - Bihar :  CFRI ,  [n.d.] 
 - viii,321 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal
<br/><br/><label>Dewey Class. No.: </label>622.62