Vivaldi, E <br/><br/>
[The antarctic ecosystem as natural experiment. Extreme photoperiods and biological rhythms].  [electronic resource] 

 -  Revista medica de Chile  Jun 1992 
 - 715-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0034-9887 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Antarctic Regions<br/>Biological Clocks<br/>Ecosystem<br/>Photoperiod