Coal quality and ash characteristics :  a study / 
by the IEA Coal Industry Advisory Board 
 - Paris :  OECD,  1985 
 - 63 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (0p.54-60) 
<br/><br/><label>ISBN: </label>9264126848 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal ash<br/>Coal--Analysis