Caring for the Earth :  A strategy for sustainable living / 
The World Conservation Union (IUCN) ... [et al.]. 
 - Gland, Switzerland :  IUCN ;  UNEP ;  WWF,  1991. 
 - 228 p. ;  il. ;  27 cm. 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>2831700744  Normal 
<br/><br/><label>Subjects--Index Terms: </label>Conservation Conservación Natural resources Recursos naturales Sustainable development Desarrollo sostenible 
<br/><br/><label>Dewey Class. No.: </label>333.72