TY JOUR TI IDENTIFICATION SOURCE OF OIL POLLUTIONS ON COMPOSITION OF RADIONUCLIDES URANIUM AND THORIUM RANKS KW identification KW oils KW transformation of oil hydrocarbons KW originator of oil pollution KW radionuclides KW oil chinks-pollutions JO Problems of risk management in the technosphere AU Ivakhniuk, S.G. AU Demekhin, F.V. PY 2014 IS 2014 PB Saint-Petersburg University of State Fire Service of Emercom of Russia