Afghan Khan, S., Mohammed Riyadh, M., Owais Ali Ibrahim, M., Elrashid, Y., Mahdi Arefin, N., Kabir, S., & Ahmed .G. M, F. (2018). Design & Development of a Gravity Powered Fan Using Gear Transmission. International Journal of Engineering & Technology, 7(3.29), 632-637. https://doi.org/10.14419/ijet.v7i3.29.21394