Darweesh SA, Hammodi AS, Mahmmod RM. A new Spectrophotometric Method For The Determination of La (III) With 3-Hydroxy -4-(2-hydroxyPhenyl azo) Naphthalene -1- Sulfonic Acid. IHJPAS [Internet]. 2016 Dec. 29 [cited 2025 Mar. 26];24(1). Available from: https://jih.uobaghdad.edu.iq/index.php/j/article/view/869