Effect of mixing ratio of Olive Solid Waste and Cow manure on Serial Extraction of Iron and Zinc in Calcareous Soil. Journal of Hama University , [S. l.], v. 1, n. 6, 2019. Disponível em: https://hama-univ.edu.sy/ojs/index.php/huj/article/view/113. Acesso em: 25 apr. 2026.