Narayanan, P.I.A. <br/><br/>
Beneficiation of low grade manganese ores of india 

 - New Delhi  Council of scientific & industrial research  1959 
 - viii,182p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>manganese
<br/><br/><label>Dewey Class. No.: </label>669.732  / N24B