Jensen, Clayne R. <br/><br/>Outdoor recreation in America:  Trends, Problems and Opportunities Clayne R. Jensen  -- 2nd ed.  -- Minnepolis, MN  Burgess Pub.  1973 <br/>ix, 284p.  23cm. <br/><br/> Includes index <br/><br/><label>ISBN: </label>808710133 <br/><br/><label>Subjects--Topical Terms: </label><br/>Outdoor reacreation--United States<br/><br/><label>Dewey Class. No.: </label>GC 790.068 J453 1973