de Vries, Tjitte. <br/><br/>
On the spot / 
Tjitte de Vries. 
 -  1968. 
 - 16, 18-19, 32-33 p. 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label> Normal 
<br/><br/><label>Subjects--Index Terms: </label>Giant tortoise Tortuga gigante Geochelone Conservation Conservación Galápagos 
<br/><br/><label>Dewey Class. No.: </label>597.924