TY  - BOOK
AU  - Willoughby,L.G.
TI  - Freshwater biology / 
T2  - Topics in the biological sciences
SN  - 0071254310
U1  - 574.52632 19
PY  - 1976///
CY  - London : 
PB  - Hutchinson, 
KW  - Biologia de água doce
ER  -