RACHMAT, Mochamad; NUR FAJRI, Ashri. How is the Learning Achievement of Elementary School Students?-Breakfast and Study Concentration. Asian Journal of Pharmaceutical Research and Development, [S. l.], v. 11, n. 3, p. 12–16, 2023. DOI: 10.22270/ajprd.v11i3.1218. Disponível em: https://ajprd.com/index.php/journal/article/view/1218. Acesso em: 21 sep. 2025.