Prakit Piya-asawajinda. 1999. Yellow oil formation at acid gas removal unit in ethylene plant. Program of Petrochemistry and Polymer Science, Chulalongkorn University;
Prakit Piya-asawajinda. (1999) Yellow oil formation at acid gas removal unit in ethylene plant . Chulalongkorn University/Bangkok.
Prakit Piya-asawajinda. Yellow oil formation at acid gas removal unit in ethylene plant. . Bangkok:Chulalongkorn University, 1999.
Prakit Piya-asawajinda. (1999) Yellow oil formation at acid gas removal unit in ethylene plant . Chulalongkorn University/Bangkok.