Pongdej Ekwanijcha. (2000) Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans. Mahidol University,:ม.ป.ท.Pongdej Ekwanijcha. 2000. Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans. ม.ป.ท.:Mahidol University,;Pongdej Ekwanijcha. Adsorption of copper(II) and zinc(II) in 0.01 M hydrochloric acid solution by chitosans. ม.ป.ท.:Mahidol University, 2000. Print.