Mellanby, Helen. <br/><br/>
Animal life in fresh water :  a guide to fresh-water invertebrates / 
by Helen Mellanby ; with a foreword by L. E. S. Eastham. 
 - 6th ed. 
 - London :  Chapman and Hall,  1963 [ reprinted 1965 ]. 
 - xi, 308 p. :  ill. ;  19 cm. 
 - Science paperbacks ; 120 .
 - Science paperbacks ; 120 .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater animals.
<br/><br/><label>Dewey Class. No.: </label>591.929  / MEA 1965