A. Bashir, W., ولید, S. Othman, N. and عثمان 2005. Spectrophotometric Determination of Benzocaine by Azo-Dye Formation Reaction with N - (1-naphthyl)ethylenediamine as Coupling Agent. Journal of Education and Science (JES). 17, 3 (Jun. 2005), 48–60. DOI:https://doi.org/10.33899/edusj.2005.162863.