Yaseen, Abdulkhalik, عبدالخالق, Farah Hasim Mohammed, and فرح. 2009. “Construction of Arcs (k, 5) - at the Level of Dizark PG (2,9) (*)”. Journal of Education and Science (JES) 22 (1):133-50. https://doi.org/10.33899/edusj.2009.57419.