Najim, Najim Suhel, et al. “ Knowledge Sharing As an Approach to Enhancing Organizational Immunity: An Exploratory Study of the Opinions of a Sample of Workers in the Salah Al-Din Education Directorate”. Tikrit Journal of Administrative and Economic Sciences, vol. 18, no. 60, 1, Feb. 2023, pp. 691-06, doi:10.25130/tjaes.18.60.1.38.