An analytical study of the principle of taking into account the direction of the wind during the establishment of marathon competitions in Iraq for the years (1980-2010). cbej [Internet]. 2022 Dec. 17 [cited 2024 Jul. 22];22(93):969-80. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/7839