Physico-chemical transformations during thermal treatment of phosphorites and solubility of the productsKaljuvee, Tiit; Kuusik, Rein, keemik; Veiderma, MihkelThird International Symposium on Inorganic Phosphate Materials : Villeneuve d'Ascq, France, September 14-16, 1999 : book of abstracts1999 / p. P.2.17 Simultaneous sorption of Cd and Zn ions on synthetic apatites from aqueous solutionsPeld, Merike; Tõnsuaadu, Kaia; Veiderma, MihkelThird International Symposium on Inorganic Phosphate Materials : Villeneuve d'Ascq, France, September 14-16, 1999 : book of abstracts1999 / p. P.2.19