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Twfiq, M.Z., Zarif, F.M., Massoud, A. and Al-Temamy, A.M. 2021. Determination the Petrophysical and Natural Radioactivity Properties of Nubian Sandstone Aquifer at the Area of Northwest El Ain Village, Sharq El-Oweinat Area, Southwestern Desert, Egypt. Asian Journal of Environment & Ecology. 15, 4 (Jul. 2021), 37-55. DOI:https://doi.org/10.9734/ajee/2021/v15i430236.