By Case, Karl E. <br/><br/>
Principles of economics 

 - 8th 
 -  Pearson Education  2007 
 - xliv; 784p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>The scope and method of economics Input demand Income
<br/><br/><label>Dewey Class. No.: </label>330  / CAS