AL-HASSAN, S. Factors affecting the decision to use organic manure(compost) in cereal production in Northern region of Ghana. African Journal of Economic Policy, [S. l.], v. 14, n. 1, 2009. DOI: 10.4314/ajep.v14i1.44193. Disponível em: https://www.ajol.info/index.php/ajep/article/view/44193. Acesso em: 6 oct. 2026.