Enciclopedia infantil Colibri 
/ SEP 
 - Mexico  : SEP/ Salvat  , c1979. 
 - 7 Vols.  : il. maps. retrs. 
<br/><br/><label>ISBN: </label>968-804-143-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Enciclopedia
<br/><br/><label>Dewey Class. No.: </label>INF REF 036 SEP