HWEHY, M.M.A., MOURSY, F.I., EL-TANTAWI, A.M. and MOHAMED, M.A.E.-H. 2024. Evaluation of the air quality in arid climate megacities (Case study: Greater Cairo). Contributions to Geophysics and Geodesy. 54, 1 (Apr. 2024), 95-118. DOI:https://doi.org/10.31577/congeo.2024.54.1.6.