Vermiculite deposits in the Palaboroa area, N. E. Transvaal,
Schwellnus, C. M. 1911-
Vermiculite deposits in the Palaboroa area, N. E. Transvaal, by C. M. Schwellnus ... Publication of the Geological Survey Division. - Pretoria, The Government Printer, 1938. - 27 p. incl. illus. (maps) tables, diagrs. 24 cm. - South Africa. Geological Survey. Geological series. Bulletin no. 11 . - Geological series. Bulletin (South Africa. Geological Survey Division) ; no. 11. .
At head of title: ... Union of South Africa. Department of Mines.
Bibliographical foot-notes.
gs 40000174
Vermiculite.
Mines and mineral resources--South Africa--Transvaal.
QE325 / .A53 no. 11
Vermiculite deposits in the Palaboroa area, N. E. Transvaal, by C. M. Schwellnus ... Publication of the Geological Survey Division. - Pretoria, The Government Printer, 1938. - 27 p. incl. illus. (maps) tables, diagrs. 24 cm. - South Africa. Geological Survey. Geological series. Bulletin no. 11 . - Geological series. Bulletin (South Africa. Geological Survey Division) ; no. 11. .
At head of title: ... Union of South Africa. Department of Mines.
Bibliographical foot-notes.
gs 40000174
Vermiculite.
Mines and mineral resources--South Africa--Transvaal.
QE325 / .A53 no. 11