This study is based on the catalogue/checklist of Pierneef works
in the Pretoria Art Museum collection. The artist's life, social,
political and artistic influences of the period, both local and
Bosch, Pieter; Eriksson, Patrick George(Geological Society of South Africa, 2008)
A complex variety of casts of sand cracks occurs at two study areas near Pretoria, with in mature, thin sandstone beds of the c. 2.1 Ga Magaliesberg Formation (Pretoria Group, Transvaal Supergroup). This formation is ...