TY  - BOOK
T1  - Freshwater biology
T2  - Topics in the biological science
A1  - Willoughby, L G.
LA  - English
PP  - London
PB  - Hutchinson
YR  - 1976
UL  - http://discoverylib.upm.edu.my/discovery/Record/453980
OP  - 167
CN  - QH96 W53
SN  - 0091254302
SN  - 0091254310
KW  - Fresh-water biology.
ER  -