Twfiq, Mohamed Z., Fardous M. Zarif, A. Massoud, and Ayman M. Al-Temamy. 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), 37-55. https://doi.org/10.9734/ajee/2021/v15i430236.