State of the planet : a world transformed ; Challenges for humanity : a thirsty planet  [cartographic material] / 
 Challenges for humanity : a thirsty planet  [cartographic material]  World transformed  [cartographic material]  Thirsty planet  [cartographic material] 
produced by National Geographic Maps for National Geographic Magazine 
 - Washington, D.C., Wash. :  The Society,  2002 
 - 2 maps on 1 sheet :  col. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NATURE--EFFECT OF HUMAN BEINGS ON--MAPS<br/>HUMAN BEINGS--EFFECT OF HUMAN BEINGS ON--MAPS<br/>ECOLOGICAL RISK ASSESSMENT--MAPS<br/>ENVIRONMENTAL IMPACT ANALYSIS--MAPS<br/>WATER-SUPPLY--MAPS<br/>WATER QUALITY--MAPS<br/>WATERSHEDS--MAPS<br/>WORLD MAPS
<br/><br/><label>LC Class. No.: </label>G3201 .E1  / S727