Schramm, Beatrix. G. <br/><br/>
Reproductive cycles of male and female giant tortoises (Geochelone nigra) on the Galápagos Islands by plasma steriod analysis and ultrasound scanning / 
Beatrix. G. Schramm, Valentine A. Lance and Miguel Casares. 
 -  1999. 
 - 523-528 p. 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label> Normal 
<br/><br/><label>Subjects--Index Terms: </label>Giant tortoise Tortuga gigante Geochelone nigra Reproduction Reproducción Cycles Ciclos 
<br/><br/><label>Dewey Class. No.: </label>597.924