TY  - BOOK
AU  - Maitland, Peter S.
TI  - Biology of fresh waters
SN  - 0216906857
U1  - 574.92 
PY  - 1978///
CY  - London
PB  - Blakie & son
KW  - Aquatic biology
N1  - Includes bibliographical references (p.224-33)
ER  -