Abdulakhat Djalilov Turopovich, N. U. N. F. N. N. RESEARCH OF GAS CHROMATOGRAM / MASS SPECTRAL ANALYSIS AT THE FERGHANA OIL REFINERY WITHOUT ADDING MODIFIERS OF THE COMPOSITION OF A STABLE CATALYZATE WITH A COMPONENT OF AUTOMOBILE GASOLINE. IJAST 2020, 29, 908 - 917.