Pathways to discovery :  exploring America's national trails / 
prepared by the Special Publications Division, National Geographic Society. 
 - Washington, D.C. :  National Geographic Society,  c1991. 
 - 199 p. :  col. ill. ;  27 cm. 
 - 917.3/0943 .
<br/><br/>Includes bibliographical references (p. 198) and index. 
<br/><br/><label>ISBN: </label>0870447920 (regular ed.) 0870447971 (library ed.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trails--United States.<br/>National parks and reserves--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Description and travel.
<br/><br/><label>Dewey Class. No.: </label>917.3/0943