TY JOUR TI Svoistva pekov iz smoly polukoksovaniya KW distillyatsiya KW toluol KW ehkstragirovanie KW fraktsionnyi sostav KW fenoly JO From Chemistry Towards Technology Step-By-Step AU Kovalev, R.Y. AU Nikitin, A.P. PY 2025 IS 6 PB Yaroslavl State Technical University