Henderson, J Vernon. <br/><br/>
Principles of economics /  eng. 
Henderson, J Vernon. & Poole, William.  
 - Massachusetts :   D.C. Health,   1991. 
 - 714p.:  25cm. 
<br/><br/><label>ISBN: </label>0669144932 
<br/><br/><label>Dewey Class. No.: </label>339.1  / HEN