King, John B. <br/><br/>
Practical commerce John B. King / 
John B. King. 
 - 3rd ed. 
 - Exeter :  Wheaton,  1980. 
 - 175 p. :  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>0080226132  net 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commerce.