Rutthai Veeracharttawan และ Chirakarn Muangnapoh. (2006) Separation of crude beta-carotene from palm olein by adsorption with synthetic polymer. Chulalongkorn University:ม.ป.ท.Rutthai Veeracharttawan และ Chirakarn Muangnapoh. 2006. Separation of crude beta-carotene from palm olein by adsorption with synthetic polymer. ม.ป.ท.:Chulalongkorn University;Rutthai Veeracharttawan และ Chirakarn Muangnapoh. Separation of crude beta-carotene from palm olein by adsorption with synthetic polymer. ม.ป.ท.:Chulalongkorn University, 2006. Print.