Economics  private market and public choice 
Robert B Ekelund...[et.al]., 
 - Hoboken, N.J.  John Wiley  c2007. 
 - xxviii, 524 p.  ill.  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780470101926 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures.