Katzen, L. (1964). Gold & the South African economy: The influence of the goldmining industry on business cycles and economic growth in South Africa, 1886-1961. Balkema.
Citace podle Chicago (17th ed.)Katzen, Leo. Gold & the South African Economy: The Influence of the Goldmining Industry on Business Cycles and Economic Growth in South Africa, 1886-1961. Cape Town: Balkema, 1964.
Citace podle MLA (8th ed.)Katzen, Leo. Gold & the South African Economy: The Influence of the Goldmining Industry on Business Cycles and Economic Growth in South Africa, 1886-1961. Balkema, 1964.
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