Postel, Sandra. <br/><br/>
Liquid assets :  the critical need to safeguard freshwater ecosystems / 
Sandra Postel ; Lisa Mastney, editor. 
 - Washington, D.C. :  Worldwatch Institute,  c2005. 
 - 78 p. :  ill. ;  22 cm. 
 - State of the world library. Worldwatch paper ;  170. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>1878071769 (pbk.) 
<br/><br/><label>LCCN: </label>2005928287 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater ecology.<br/>Watershed management.<br/>Ecosystem management.<br/>Water-supply.
<br/><br/><label>LC Class. No.: </label>QH541.5.F7  / P85 2005