REFERENCES
- Lewis-Williams , J. D. 2005 . The southern African San and their rock art . Transactions of the Royal Society of South Africa , 60 : 139 – 146 .
- Malan , F. S. and Van Wyk , J. A. 1992 . The packed cell volume and colour of the conjunctiva as aids for monitoring Haemonchus contortus infestation in sheep . Proceedings of the South African Veterinary Association Biennial National Veterinary Congress, Grahamstown , : 139 7-10 September 1992
- Malan , F. S. , Van Wyk , J. A. and Wessels , C. D. 2001 . Clinical evaluation of anaemia in sheep: early trials . Onderstepoort Journal of Veterinary Research , 61 : 165 – 174 .
- McCarthy , T. and Rubidge , B. 2005 . The Story of Earth & Life 333 Cape Town : Struik .
- Skinner , J. D. 2005 . Curriculum vitae of Professor P.V. Tobias FRS, Hon. FRSSAf . A Festschrift to P.V. Tobias. Transactions of the Royal Society of South Africa , 60 : 153 – 164 .
- Smuts , M. M.S. , Kriek , N. P.J. , Van der Westhuizen , E. E. and Verwoerd , D. W. 2008 . “ Faculty of Veterinary Science-general history ” . In Onderstepoort 1908–2008 Edited by: Verwoerd , D. W. and Bigalke , R. D. 216 Pretoria : Veterinary History Committee of the South African Veterinary Association .