Simple Method f or Spectrophotometric Determination o f Benzidine i n Aqueous Solutions b y Coupling w ith Β - Naphthol. ANJS [Internet]. 2018 Jul. 27 [cited 2025 Apr. 4];14(2):43-50. Available from: https://mail.anjs.edu.iq/index.php/anjs/article/view/879