“Simple Method f or Spectrophotometric Determination o f Benzidine i n Aqueous Solutions b y Coupling w ith Β - Naphthol”, ANJS, vol. 14, no. 2, pp. 43–50, Jul. 2018, Accessed: Nov. 24, 2024. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/879