Arnold, Roger A. <br/><br/>Principles of Economics / ROger A. Arnold. --  - Tenth Edition. --  - South-Western;  Cengage Learning,  2012.  - 796 pages:  illustrations;  26 cm <br/><br/> Includes Index <br/><br/><label>Subjects--Topical Terms: </label><br/>Economics  <br/><br/><label>LC Class. No.: </label>HB171.5  / .Ar641 2012