Jackson, S., Jacobs, Z. & Roberts, R. G. (2009). Were environmental or demographic factors the driving force behind Middle Stone Age innovations in southern Africa?. South African Journal of Science, 105 (9/10), 333-334.
Jackson, S., Jacobs, Z. & Roberts, R. G. (2009). Were environmental or demographic factors the driving force behind Middle Stone Age innovations in southern Africa?. South African Journal of Science, 105 (9/10), 333-334.