Khleaf Alnofal, S. A. and Matrood, D. A. (2021) “Impact of Environmental challenges on Organizational opportunities Using step-wise Regression Analytical study of opinions sample of workers in Municipal Directorate Mosul”, Tikrit Journal of Administrative and Economic Sciences, 17(53, 2), pp. 109–121. doi: 10.25130/tjaes.17.53.2.7.