Sinha, R.K.. <br/><br/>
Industrial Minerals /  

 - 1st ed /  
 - New Delhi-1 :   Oxford & IBH Publishing Co. Pvt. Ltd. ,   1957 
 - p.479,vi :  
<br/><br/><label>Dewey Class. No.: </label>X8(H1)  / M2;6