USMAN, Abubakar; KONTAGORA, Nasir Mu'Azu. Statistical Process Control on Production: A Case Study of Some Basic Chemicals Used in Pure Water Production. Pakistan Journal of Nutrition, Pakistan, v. 9, n. 4, p. 387–391, 2010. DOI: 10.3923/pjn.2010.387.391. Disponível em: https://pjnonline.org/pjn/article/view/1185. Acesso em: 6 sep. 2025.