Raham, A.R. et al. 2020. Studying the thinning Effect of Longitudinal development in Extensive Air Showers for Primary Proton and Iron Nuclei at Ultra-High Energies. Al-Mustansiriyah Journal of Science. 31, 3 (Aug. 2020), 114–118. DOI:https://doi.org/10.23851/mjs.v31i3.843.