TY  - BOOK
AU  - Visser,D.J.L.
TI  - The ochre deposits of the Riversdale district,: Cape Province,
T2  - South Africa. [Geological Survey] Geological series. Bulletin
AV  - QE325 .A53 no. 9
PY  - 1937///
CY  - Pretoria
PB  - Government printer
KW  - Ocher
KW  - Mines and mineral resources
KW  - South Africa
KW  - Cape of Good Hope
N1  - At head of title: ... Union of South Africa. Department of mines; Bibliography: p. 21
ER  -