Our changing planet:  
the FY 1991 U.S. global change research prográm/ Commitee on Earth Sciences 
 - Reston:  Commitee on Earth Sciences,  1991 
 - 60p. 
<br/><br/> exemplares 
<br/><br/><label>LCCN: </label>true true 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ambiente-USA<br/>Política ambiental
<br/><br/><label>Universal Decimal Class. No.: </label>502.3 COM ch