Direct use of coal 

 - Cambridge  Ballinger publishing company         1980 
 - xv, 411p.  cm. 
 - Ballinger energy series .
<br/><br/><label>Standard No.: </label>41213 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical technology
<br/><br/><label>Dewey Class. No.: </label>F551.N7, M0