Patri, Digambar <br/><br/>
Mathematical methods in economics-I  by Digambar Patri & D.N. Patri 

 - New Delhi  Kalyani Publishers  2018 
 - 244p., 
<br/><br/><label>ISBN: </label>9789327292312 
<br/><br/><label>Dewey Class. No.: </label>330  / PAT