AL. MAKHLOF, Hassin; ABD EL-MAWLA MOHAMMED, Hassan; L. AHMED, Gomoa. Effect of Organic (Biochar, Compost and Chicken Manure) and Mineral Fertilization on Available NPK on Sandy Soil. Journal of Pure & Applied Sciences , [S. l.], v. 18, n. 4, p. 86–91, 2019. DOI: 10.51984/jopas.v18i4.392. Disponível em: https://www.sebhau.edu.ly/journal/jopas/article/view/392. Acesso em: 4 nov. 2026.