Jayaratne, Y.L.R. <br/><br/>
A SYSTEMS CONCEPT OF BUSINESS ORGANIZATION AND MANAGEMENT RELATIONSHIPS  eng 
Jayaratne, Y.L.R. 
 - Colomno:  Lake House Investment Ltd,  1995. 
 - 236p.  22cm. 
<br/><br/><label>ISBN: </label>9555521042 
<br/><br/><label>Dewey Class. No.: </label>650.01  / JAY