Goldberg, Samuel <br/><br/>
Introduction to difference equations :  with illustrative examples from economics, psychology, and sociology 

 - New York :  Dover Publications,  ©1986. 
 - xii, 260 p. :  ill. (b&w) ;  22 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0486650847 
<br/><br/><label>Subjects--Index Terms: </label>Difference equations Social sciences--Mathematical models 
<br/><br/><label>Dewey Class. No.: </label>515.625  / GOL / G