TY JOUR TI INDICATORS OF INVASION OF MASS CARP SPECIES BY METCERCARIAE OF OPISTHORCHIIDAE FAMILY IN THE LOWER IRTYSH KW ide KW bream KW roach KW Opisthorchis felineus KW Metorchis bilis KW invasive extent KW intensity of invasion KW abundance index JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Medvedeva, I.. AU Liberman, E.. PY 2017 IS PB Astrakhan State Technical University