TY  - GEN
AU  - Willoughby, L G
TI  - Freshwater Biology
SN  - 0091254302
U1  - 578.76 
PY  - 1976///
CY  - London
PB  - Hutchinson
KW  - Fish Biology
KW  - Photosyntheic Plants
KW  - Seawage Pollution
KW  - Freshwater Biology
ER  -