Jayasinghe, Prabhath. <br/><br/>
Managerial economics :   concepts and tools/  eng. 
Jayasinghe, Prabhath. 
 - Battaramulla :   Expographic Books Private Limited,   2018.  
 - 507 p. :   graphs,charts ;   25 cm. 
<br/><br/><label>ISBN: </label>9789551879013 
<br/><br/><label>Dewey Class. No.: </label>338.5  / JAY