Nattaphanee Buadee. 2008. Gemmological characteristics of corundum from Awissawella deposit, Ratnapura gem field, Sri Lanka. Faculty of Science, Chulalongkorn University;
Nattaphanee Buadee. (2008) Gemmological characteristics of corundum from Awissawella deposit, Ratnapura gem field, Sri Lanka . Chulalongkorn University/Bangkok.
Nattaphanee Buadee. Gemmological characteristics of corundum from Awissawella deposit, Ratnapura gem field, Sri Lanka. . Bangkok:Chulalongkorn University, 2008.
Nattaphanee Buadee. (2008) Gemmological characteristics of corundum from Awissawella deposit, Ratnapura gem field, Sri Lanka . Chulalongkorn University/Bangkok.