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Coal survey: memoir.

APA Citation

Geological Survey (South Africa)., South Africa. Department of Commerce and Industries., South Africa. Department of Mines. (1940). Coal survey: memoir. Pretoria: Printed by the Govt. Printer.

MLA Citation

Geological Survey (South Africa), South Africa. Department of Commerce and Industries, and South Africa. Department of Mines. Coal Survey: Memoir. Pretoria: Printed by the Govt. Printer, 1940.

Warning: These citations may not always be complete (especially for serials).