Pornthip Parinayok. 2007. Recovery of platinum group metals from automobile catalytic converters. Field of Study Geo-resources Engineering, Chulalongkorn University;
Pornthip Parinayok. (2007) Recovery of platinum group metals from automobile catalytic converters . Chulalongkorn University/Bangkok.
Pornthip Parinayok. Recovery of platinum group metals from automobile catalytic converters. . Bangkok:Chulalongkorn University, 2007.
Pornthip Parinayok. (2007) Recovery of platinum group metals from automobile catalytic converters . Chulalongkorn University/Bangkok.