Singal, M K. <br/><br/>
Approach to numbers   

 - Delhi :   R Chand,   1968. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical Sciences
<br/><br/><label>Dewey Class. No.: </label>515  / SIN