Tianchai Phrukrungsri. 1989. Effect of activated clay on hydrogenation of castor oil by nickel catalyst. Graduate School, Chulalongkorn University;
Tianchai Phrukrungsri. (1989) Effect of activated clay on hydrogenation of castor oil by nickel catalyst . Chulalongkorn University/Bangkok.
Tianchai Phrukrungsri. Effect of activated clay on hydrogenation of castor oil by nickel catalyst. . Bangkok:Chulalongkorn University, 1989.
Tianchai Phrukrungsri. (1989) Effect of activated clay on hydrogenation of castor oil by nickel catalyst . Chulalongkorn University/Bangkok.