La complejidad ambiental 
Enrique Leff ... [et al.]. 
 - México, D.F.  Siglo Veintiuno Editores  2000. 
 - ix, 314 p.  21 cm. 
<br/><br/><label>ISBN: </label>968-23-2212-X  19.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental education<br/>Ecology--Study and teaching.