Ray, A.K. <br/><br/>
Manual of procedures for chemical and instrumental analysis of ores, minerals and ore dressing products /by A.K.Ray and M.R. Ruikar. 

 - Nagpur  Ind.Bureau of Mines  1979 
 - p.v. 
<br/><br/><label>Dewey Class. No.: </label>549.13  / N79