Brown, Lester R. <br/><br/>
State of the World 1987: a Worldwatch Institute Report on Progress Toward a Sustainable Society 

 - New York (etc.) :   W.W.Norton,   c1987. 
 - 268 p. ;   23 cm. 
<br/><br/> Includes notes bibliofiques 
<br/><br/><label>ISBN: </label>0393303896 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONSERVACION DE LOS RECURSOS
<br/><br/><label>Universal Decimal Class. No.: </label>502.3