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Gross 2012, p. 20. Gross, Stephen (February 2012). "Selling Germany in South-Eastern Europe: Economic Uncertainty, Commercial Information and the Leipzig Trade Fair 1920—40". Contemporary European History. 21 (1): 19–39. doi:10.1017/S096077731100052X. S2CID163461376.
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Gross 2012, p. 20. Gross, Stephen (February 2012). "Selling Germany in South-Eastern Europe: Economic Uncertainty, Commercial Information and the Leipzig Trade Fair 1920—40". Contemporary European History. 21 (1): 19–39. doi:10.1017/S096077731100052X. S2CID163461376.