Roepke, H. G. (1956). Movements of the British iron and steel industry, 1720 to 1951. University of Illinois Press.
Citace podle Chicago (17th ed.)Roepke, Howard G. Movements of the British Iron and Steel Industry, 1720 to 1951. Urbana: University of Illinois Press, 1956.
Citace podle MLA (8th ed.)Roepke, Howard G. Movements of the British Iron and Steel Industry, 1720 to 1951. University of Illinois Press, 1956.
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