The challenge of sustainability an action agenda for the global invironment / 
GEF. 
 - Washington :  GEF,  2002. 
 - 103 p. 
<br/><br/> [ The text of this publication may be reptoduced in whole or in part and in any form for educational or nonprofit uses, without special permission, provided acknowledgment of the source. Copies may be sent to the GEF Secretariat in care of the address above ]. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Global invironment
<br/><br/><label>Subjects--Index Terms: </label>saving valvuable