Weeks, W. William <br/><br/>
Beyond the ark :  tools for an ecosystem approach to conservation / 
by W. William Weeks, foreword by Bruce Babbitt 
 - Washington, D.C. :  Island Press,  1997 
 - 172 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>1559633921  RM90.83 
<br/><br/><label>LCCN: </label>96-23724 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecosystem management<br/>Nature conservation<br/>Nature conservancy (U.S.)