Hassin AL. Makhlof, Hassan Abd El-mawla Mohammeda , Gomoa L. Ahmed. “Effect of Organic (Biochar, Compost and Chicken Manure) and Mineral Fertilization on Available NPK on Sandy Soil”. Journal of Pure & Applied Sciences 18, no. 4 (November 17, 2019). Accessed November 21, 2024. https://sebhau.edu.ly/journal/jopas/article/view/392.