Hafedh, F. R. ., Mohammed, H. H., & Mageed, Z. N. . (2022). Synthesis and Characterization of Novel Pyrimido [1,2-a] benzimidazole and its Derivatives. Al-Mustansiriyah Journal of Science, 33(1), 15–20. https://doi.org/10.23851/mjs.v33i1.1020