Dhingra, Ishwar & Gary, V.K. <br/><br/>
Samastigat Arthik siddhant 

 - New Delhi  Sultanchand & Sons.  2009 
 - 321p. 
<br/><br/><label>ISBN: </label>978 -81- 8054 710-2 
<br/><br/><label>Dewey Class. No.: </label>339H   Dhi.P9