B.J Hussein, D.A.AL-Munneem. Calculating The Phosphor Concentration in Water of Tigris by (DNAA) Technique. IHJPAS [Internet]. 2005 Oct. 20 [cited 2026 Jan. 8];18(4). Available from: https://jih.uobaghdad.edu.iq/index.php/j/article/view/4394