Ghosh,Surendranath. <br/><br/>
Commercial Mathematics and Statistics 

 - 3rd. 
 - Guwahati:  Students Stores. 
 - 494. 
<br/><br/><label>ISBN: </label>81-86494-70-7 
<br/><br/><label>Dewey Class. No.: </label> / GHO