BRAY, Lucinda M.; BRAY, R. C. E.; ENG, P. Geological Education: Individual Audio-Visual Instruction for Geology Students. Geoscience Canada, [S. l.], v. 1, n. 4, 1974. Disponível em: https://journals.lib.unb.ca/index.php/GC/article/view/2876. Acesso em: 19 apr. 2024.