Walker, John R. <br/><br/>
Tourism  Concept and practices 
John R .Walker, Josielyn T.Walker 
 - Boston  Prentice Hall  2011 
 - xxxviii,537p.  ill(some col.)  26cm 
<br/><br/> Includes index p.527 - 535 
<br/><br/><label>ISBN: </label>0138142459 97800138142452 9780138142452 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tourism