Citation: Ae. Zhokhov et al., INVERTEBRATES OF THE RYBINSK RESERVOIR AS SUPPLEMENTARY HOSTS OF TREMATODS SPHAEROSTOMUM-BRAMAE AND S-GLOBIPORUM (TREMATODA, OPECOELIDAE) -FIELD AND EXPERIMENTAL INVESTIGATIONS, Zoologiceskij zurnal, 75(2), 1996, pp. 168-177