Singal, M.K. and Rani, Asha <br/><br/>
Sets and Numbers 

 - New Delhi  Ramchand & Co.  1969 
 - 114 
<br/><br/><label>Publisher. No.: </label> Bangalore Tract & Book Society 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics