Published in Transactions of the South African Philosophical Society, in 1907, in volume 17, issue 1, pages 145-149

Created: 2023-05-17, modified: 2023-05-17

Published in Transactions of the South African Philosophical Society, in 1907, in volume 17, issue 1, pages 151-176

Created: 2023-05-17, modified: 2023-05-17

Published in Transactions of the South African Philosophical Society, in 1907, in volume 17, issue 1, pages 185-194

Created: 2016-04-30, modified: 2023-02-16