Managerial Economics / 
Edited by G. P. E. Clarkson 
 - England :  Penguin Books ,  1968 
 - 431 p. ;  19 cm. 
<br/><br/><label>ISBN: </label>0140800573 
<br/><br/><label>Dewey Class. No.: </label>658.15  / CLM 1968