TY  - BOOK
AU  - Joubert,G.K.
TI  - Tungsten ores in South Africa with special reference to Namaqualand and the Orange River
T2  - South Africa. Dept. of Mines. Geological series. Bulletin
AV  - QE325 .A53 no. 13
U1  - 553.46 
PY  - 1941///
CY  - Pretoria
PB  - Govt. Printer
KW  - Tungsten ores
KW  - South Africa
ER  -