GRISBROOK, C. H. Organic remains in the Karroo: in a letter to Dr. Smith , Corresponding Secretary to the South African Institute. South African Quarterly Journal, Cape Colony, v. 1, n. 5, p. 25–27, 1830. DOI: 10.21504/saqj.15.2589. Disponível em: https://journal.ru.ac.za/index.php/saqj/article/view/2589. Acesso em: 20 nov. 2025.