Shakir , Karam, and Dawood Mohammed. 2025. “Spectrophotometric Determination of Doxycycline Hydrochloride in Its Pure Form and Its Pharmaceutical Preparations Using Reagent 2,4,6 - Tribromo-Anline by the Azo Coupling Reaction”. Journal of Wahj Al-Ulom for Pure Sciences 1 (4). https://doi.org/10.33899/jwups.v1i4.28985.