The coals of the Witbank District (Transvaal) Pt. I. Geology, mining and marketing of Witbank coals,
Graham, Alexander Chimes, 1892-
The coals of the Witbank District (Transvaal) Pt. I. Geology, mining and marketing of Witbank coals, by A.C. Graham ... Pt. II. The physical and chemical properties of Witbank coals, by P.N. Lategan ... - Johannesburg, Published by the Transvaal Chamber of Mines, Collieries Committee, and printed by Hortors Limited, 1931. - viii, 169 p. incl. illus., tables. diagrs. 12 fold. pl. (incl. plans, diagrs.) 21 cm.
gs 32000086
Coal--South Africa--Transvaal.
TN810.T7 / G7
The coals of the Witbank District (Transvaal) Pt. I. Geology, mining and marketing of Witbank coals, by A.C. Graham ... Pt. II. The physical and chemical properties of Witbank coals, by P.N. Lategan ... - Johannesburg, Published by the Transvaal Chamber of Mines, Collieries Committee, and printed by Hortors Limited, 1931. - viii, 169 p. incl. illus., tables. diagrs. 12 fold. pl. (incl. plans, diagrs.) 21 cm.
gs 32000086
Coal--South Africa--Transvaal.
TN810.T7 / G7