Panu Punnarak. 1999. Reactions of calcium ion with polyacrylate and its copolymers. Department of Petrochemistry and Polymer Science, Chulalongkorn University;
Panu Punnarak. (1999) Reactions of calcium ion with polyacrylate and its copolymers . Chulalongkorn University/Bangkok.
Panu Punnarak. Reactions of calcium ion with polyacrylate and its copolymers. . Bangkok:Chulalongkorn University, 1999.
Panu Punnarak. (1999) Reactions of calcium ion with polyacrylate and its copolymers . Chulalongkorn University/Bangkok.