Osborne, S. (1920). The Upper Silesian question and Germany's coal problem: In two parts complete in one volume. Allen and Unwin.
Citación estilo ChicagoOsborne, Sidney. The Upper Silesian Question and Germany's Coal Problem: In Two Parts Complete in One Volume. London: Allen and Unwin, 1920.
Cita MLAOsborne, Sidney. The Upper Silesian Question and Germany's Coal Problem: In Two Parts Complete in One Volume. Allen and Unwin, 1920.
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