TY JOUR TI EPIZOOTOLOGICAL MONITORING OF INFECTIOUS AND PARASITIC DISEASES OF FISH, SOCIO-ECONOMIC IMPORTANCE OF DEVELOPING A SYSTEM OF MONITORING THE STATE OF SURFACE WATER OF SMALL PONDS KW JO Agrarian Bulletin of the AU Petrova, O.G. AU Badova, O.V. AU Rechkalov, D.N. PY 2018 IS 176 PB Ural State Agrarian University