TY  - BOOK
AU  - Nel,Louis T.
ED  - Geological Survey (South Africa)
TI  - The geology of the Postmasburg manganese deposits and the surrounding country: An explanation of the geological map 
AV  - TN490.M3 N4
PY  - 1929///
CY  - Pretoria
PB  - The Government printer
KW  - Manganese ores
KW  - South Africa
KW  - Geology
KW  - Postmasburg
N1  - At head of title : Union of South Africa. Department of mines and industries. Geological survey
ER  -