MELLANBY, Helen <br/><br/>
Animal life in fresh water:   a guide to fresh-water invetebrates / 
by Helen Mellanby 
 - London  Chapman &Hall  1963 
 - 308 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>45599 
<br/><br/><label>Dewey Class. No.: </label>591.929  / MEL