Memorandum from Christian Calmes on the economic and political requirements of the European Communities (Luxembourg, 14 Februrary 1957)
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Source: Bundesarchiv, Koblenz, Potsdamer Str. 1 56064 Koblenz. http://www.bundesarchiv.de, Nachlass Walter Hallstein, BArch N 1266/1462.
Copyright: Bundesarchiv Koblenz