Porwal; L.S. <br/><br/>
Ankekshan;Siddhant Or Vyavahar 

 -  K.M. Prakashan  1982 
 - 296 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Commerce
<br/><br/><label>Dewey Class. No.: </label>657.45  / P83a