Crelling, John C. <br/><br/>
Principles and applications of coal petrology: short course notes 

 - Indiana University  Society of Economic Paleontologists and Mineralogists  1980 
 - 127p.  28cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal analysis
<br/><br/><label>LC Class. No.: </label>QTO TP325.C74