Ahmed, Osama Tarek, and Zainab Satar Muhammad. “Calculating the Monthly Frequency for Cloud Cover in Baghdad Station”. Al-Mustansiriyah Journal of Science 29, no. 2 (November 17, 2018): 17–25. Accessed May 6, 2024. https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/130.