Porntip Ngampimanman. 1998. Functionalisation of polystyrene via friedel-crafts acylation and its charachterisation. Faculty of Graduate Studies, Mahidol University;
Porntip Ngampimanman. (1998) Functionalisation of polystyrene via friedel-crafts acylation and its charachterisation . Mahidol University/Bangkok.
Porntip Ngampimanman. Functionalisation of polystyrene via friedel-crafts acylation and its charachterisation. . Bangkok:Mahidol University, 1998.
Porntip Ngampimanman. (1998) Functionalisation of polystyrene via friedel-crafts acylation and its charachterisation . Mahidol University/Bangkok.