BERGER, Leszek <br/><br/>
European green frogs and their protection / 
Leszek Berger. 
 -- Poznan :   Ecological Library Foundation,   cop. 2008 
 - 72 p.  il. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Anfibios<br/>Ranas - Europa - Protección
<br/><br/><label>Universal Decimal Class. No.: </label>597.8(4)