Hellan, Ruben C. <br/><br/>
Principles of economics and the Canadian economy / 
Ruben C. Bella n. 
 - 3rd ed. 
 - Toronto :  McGraw-Hill ,  1967 
 - xii,593p.:  ill.;  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Canada--Economic conditions.
<br/><br/><label>Dewey Class. No.: </label>330.971 BEL