“Study the Effect of Changing Positions on Some of the Spectral Properties of the New Azo Dye [sodium (E)-7-Amino-3-((2-(hydrogenarsonato) Phenyl) Diazenyl)-3-Hydroxynaphthalene -1-Sulfonate] and Compare It With Other Azo Dye Prepared in Advance [sodium (Z)-4-Amino-2-((2-(hydrogenarsonato) Phenyl) Diazenyl)-4-Hydroxynaphthalene -2-Sulfonate]”. University of Thi-Qar Journal of Science, vol. 6, no. 2, June 2017, pp. 52-60, https://doi.org/10.32792/utq/utjsci/v6i2.87.