Webb, J. E. <br/><br/>
Guide to living amphibians / 
J. E. Webb, J. A. Wallwork and J. H. Elgood. 
 - First edition 
 - London, U.K. ;  The MacMillan Press Ltd.,   1981. 
 - 143 p. ;  il. mapas. ;  22 cm. 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>0333307496 (hard cover) 0333306015 (paper cover) 
<br/><br/><label>Subjects--Index Terms: </label>amphibia. amphibians. 
<br/><br/><label>Dewey Class. No.: </label>597.8