TY  - SER
AU  - Lenhardt,M.
TI  - Seasonal changes in some blood chemistry parameters and in relative liver and gonad weights of pike - Esox lucius L. - from the River Danube
KW  - Haematology
KW  - Gonadosomatic Index
N1  - Institute for biological Research, 29 novembra 142, 11000 Belgraade, Yugoslavia
ER  -