Heyer Ronald .W <br/><br/>
Measuring and monitoring biological diversity. Standard methods for amphibians 

 - Washington :  Smithsonian Institution Press  ,          1994 
 - xix, 364 p 
<br/><br/><label>ISBN: </label>1560982845 
<br/><br/><label>Dewey Class. No.: </label>597.604