Alkali, B., B. S. Elkanah, S. G. Amarem, A. B. Hassan, N. S. Gukop, and E. A. P. Egbe. 2021. “Development of a Windmill for Pumping Water Using Positive Displacement Pump”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 17 (3), 269-78. https://azojete.com.ng/index.php/azojete/article/view/442.