TY  - BOOK
AU  - Mellanby,Helen
AU  - Eastham, L. E. S. 
TI  - Animal life in fresh water: a guide to fresh-water invertebrates 
T2  - Science paperbacks ; 120
U1  - 591.929 23
PY  - 1963/// [ reprinted 1965 ]
CY  - London
PB  - Chapman and Hall
KW  - Freshwater animals
N1  - Includes bibliographies and index
ER  -