Rungroj Ampha. 1996. Determination of dispersants in gasoline and diesel oil. Field of Study Petrochemistry, Chulalongkorn University;
Rungroj Ampha. (1996) Determination of dispersants in gasoline and diesel oil . Chulalongkorn University/Bangkok.
Rungroj Ampha. Determination of dispersants in gasoline and diesel oil. . Bangkok:Chulalongkorn University, 1996.
Rungroj Ampha. (1996) Determination of dispersants in gasoline and diesel oil . Chulalongkorn University/Bangkok.