Tourism and national parks :  issues and implications / 
edited by Richard W. Butler and Stephen W. Boyd. 
 - Chichester :  John Wiley & Sons,  2000. 
 - viii, 342 p. :  ill., maps ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0471988944  RM353.56 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tourism--Environmental aspects.<br/>National parks and reserves--Public use.