Bhattacharya,R N/ <br/><br/>
Coal chemicals 
R N,Bhatttacharya 
 - New Delhi  Allied publishers Ltd  c1996 
 - xvi, 191p. 
<br/><br/><label>ISBN: </label>8170235391 
<br/><br/><label>Subjects--Index Terms: </label>Coal chemicals 
<br/><br/><label>Dewey Class. No.: </label>662.74  / COA