HASSAN, A. A.; ALAADIN, A. M. Effect of spatial distribution on summer agricultural crop production in Halabja province. Journal of University of Human Development, [S. l.], v. 12, n. 3, p. 57–70, 2026. DOI: 10.21928/juhd.v12n3y2026.pp57-70. Disponível em: https://journals.uhd.edu.iq/index.php/juhd/article/view/1607. Acesso em: 23 aug. 2026.