POTGIETER, Thean. Guiding the Seafarers: The South African Hydrographic Office and the Contribution of the Three Proteas. Scientia Militaria - South African Journal of Military Studies, [S. l.], v. 40, n. 3, 2013. DOI: 10.5787/40-3-1038. Disponível em: https://www.journals.ac.za/index.php/pub/article/view/1038. Acesso em: 12 jun. 2026.