Waranya Chitpradub. 1993. Improvement of lubricating base oils by hydrogenation. Field of Study Petrochemistry, Chulalongkorn University;
Waranya Chitpradub. (1993) Improvement of lubricating base oils by hydrogenation . Chulalongkorn University/Bangkok.
Waranya Chitpradub. Improvement of lubricating base oils by hydrogenation. . Bangkok:Chulalongkorn University, 1993.
Waranya Chitpradub. (1993) Improvement of lubricating base oils by hydrogenation . Chulalongkorn University/Bangkok.