TY  - BOOK
AU  - Mellanby,Helen, x
AU  - x
TI  - Animal life in fresh water: a guide to fresh-water invertebrates
SN  - x    
U1  - 591.1/MEA 
PY  - 1968///
CY  - London
PB  - Methuen
KW  - Zoology
N1  - Includes
ER  -