Leqaa Mohammed Saeed Hussein, & Taha Hameed Jasim Al-Douri. (2020). Bi- Supra Hereditary and Bi – Supra Topological Properties for some Supra – Separation Axioms. Tikrit Journal of Pure Science, 25(3), 124–128. https://doi.org/10.25130/tjps.v25i3.260