Joubert, G. K. 1903-

Tungsten ores in South Africa with special reference to Namaqualand and the Orange River. - Pretoria, Govt. Printer, 1941. - 8 p. fold. map. 24 cm. - South Africa. Dept. of Mines. Geological series. Bulletin no. 13 . - South Africa. Geological Survey. Geological series. Bulletin no. 13. .

gs 50000047


Tungsten ores--South Africa.

QE325 / .A53 no. 13

553.46