BELANGER, G M. Expo-Optica ’83 - The Spanish Trade Fair. Canadian Journal of Optometry, [S. l.], v. 45, n. 4, 1983. DOI: 10.15353/cjo.v45i4.4320. Disponível em: https://www.cjo-rco.ca/index.php/cjo/article/view/4320. Acesso em: 1 feb. 2026.