Some further thoughts concerning the 24 mm. Potchefstroom, Pretoria and Rustenburg datestamps
Author: Dickson, J. and Drysdall, A.R. and Wingent, P., (pg. 86-87)
Published in: Volume 31, Issue 3, pg. 77-110, 1996
Published in: Volume 31, Issue 3, pg. 77-110, 1996