Andrade, Victoria <br/><br/>
Educacion Ambiental  : ecologia :  tercer grado 
/ Victoria Andrade Homero Sanchez 
 - 2a ed 
 - Mexico  : Trillas  , c1996. 
 - 160 p.  : il.  ;  70.00    pb. 
<br/><br/><label>ISBN: </label>968-24-5491-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecologia
<br/><br/><label>Dewey Class. No.: </label>574.5 AND