Wali Mohan K Ed. <br/><br/>
Ecology and coal resource development. 

 - New York  Pergamon press USA         1979 
 - 1091p.  cm. 
 -  V2 .
<br/><br/><label>ISBN: </label>0080238637 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>X9(HZ551):77.1.N7, L9.1-.2