Bell C. Notes on South African Bored Stones, or Perforated Stone Balls, and a Hafted Stone Axe from South Australia, presented to the Museum; with Notice of Cave Paintings in South Africa. PSAS [Internet]. 1875 Nov. 30 [cited 2024 May 7];11:140-5. Available from: https://journals.socantscot.org/index.php/psas/article/view/5735