Filik H., Demirata Öztürk B. D., Doğutan M., Gümüş G., Apak R. Separation and Preconcentration of Iron(II) and Iron(III) from Natural water on a Melamin-formaldehyde Resin EUROANALYSIS IX EUROPEAN CONFERENCE ON ANAL. CHEMISTRY Bologna-Italy, September (1-7) 1996, FrP120 (poster).