Bloach, Carolyn C <br/><br/>
Coal information sources and data bases 

 - NJ:   Noyes Data Corporation,   1980 
 - xvi, 128p. 
<br/><br/><label>ISBN: </label>0815508301 
<br/><br/><label>Universal Decimal Class. No.: </label>D 03(026):559.3  / M0