TY JOUR TI ESSENCE OF THE METHODS OF CONDUCTING LABORATORY CLASSES «DEFINITION CETANE NUMBERS OF THE FUELS OF FIRE TRUCKS» KW laboratory activity KW diesel fuel KW cetane number KW hydrocarbons KW chromatography method JO Psychological and pedagogical problems of human and social security AU Morozov, V.A. AU Lozhkin, V.N. AU Lozhkina, O.V. PY 2015 IS 2015 PB Saint-Petersburg University of State Fire Service of Emercom of Russia