Pongdej Ekwanijcha. 2000. Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans. Faculty of Graduate Studies, Mahidol University;
Pongdej Ekwanijcha. (2000) Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans . Mahidol University/Bangkok.
Pongdej Ekwanijcha. Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans. . Bangkok:Mahidol University, 2000.
Pongdej Ekwanijcha. (2000) Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans . Mahidol University/Bangkok.