Pranorm Saejueng. (1999) Cation-exchange properties of some clay minerals. Mahidol University,:ม.ป.ท.Pranorm Saejueng. 1999. Cation-exchange properties of some clay minerals. ม.ป.ท.:Mahidol University,;Pranorm Saejueng. Cation-exchange properties of some clay minerals. ม.ป.ท.:Mahidol University, 1999. Print.