Knudson, Douglas M. <br/><br/>
Outdoor recreation / 
Douglas M. Knudson. 
 - New York :  Macmillan,  c1980. 
 - viii, 655 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0023653507 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Outdoor recreation--Management.--United States<br/>Natural resources--Management.--United States
<br/><br/><label>Dewey Class. No.: </label>658.91790973  / KNO 1980