Zwinger, Ann. <br/><br/>
Land above the trees :  a guide to American alpine tundra / 
Ann H. Zwinger and Beatrice E. Willard ; with line drawings by Ann H. Zwinger. 
 - Boulder, Colo. :  Johnson Books,  c1996. 
 - xvix, 425 p. :  ill., map ;  22 cm. 
<br/><br/> Originally published: New York : Harper & Row, 1972. 
<br/><br/>Includes bibliographical references (p. 393-404) and index. 
<br/><br/><label>ISBN: </label>
<br/><br/><label>LCCN: </label>96011083  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mountain ecology--United States.<br/>Tundra ecology--United States.<br/>Mountain plants--United States.
<br/><br/><label>LC Class. No.: </label>QH104  / .Z94 1996 
<br/><br/><label>Dewey Class. No.: </label>574.5/264