Report of work undertaken 1966 / 
Published by CFRI 
 - Dhanbad:  CFRI ,  1966 
 - 47 p.  33 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal preparation<br/>Coal preparation plants--India
<br/><br/><label>Dewey Class. No.: </label>662.622954