Adsorption Of Pb (II), Cd(II), And Cr(III) From Aqueous Solution By Poly-5- Allyl-Calix(4) Arene Tetra Carboxylic Acid. - Desi Suci Hndayani, Jumina, Dwi Siswanta, Mustofa, KeisukeOhto, Hidetaka Kawakita. (J. Indo. Jour. Chem., XI (2) 2011 : 191-195)