NACIS NEWS, M. NACIS News. Cartographic Perspectives, [S. l.], n. 09, p. 28, 1991. DOI: 10.14714/CP09.1076. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp09-nacis-news. Acesso em: 3 may. 2024.