CHRISTIANSEN, F. G. Review of Survey activities: Colophon, contents, introduction. GEUS Bulletin, Copenhagen, Denmark, v. 38, p. 1–8, 2017. DOI: 10.34194/geusb.v38.5254. Disponível em: https://geusbulletin.org/index.php/geusb/article/view/5254. Acesso em: 7 aug. 2022.