A study of the effect of the length of the main and branch pipes on the efficiency of the semi-fixed sprinkler irrigation system. Journal of the College of Basic Education, [S. l.], v. 18, n. 74, p. 575–582, 2023. DOI: 10.35950/cbej.v18i74.9368. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9368.. Acesso em: 13 may. 2025.