Schäfke, W. (2003). Köln. Köln: Dumont.
ISBD CitationKöln / Schäfke, Werner . — Köln : Dumont, 2003. — 336 S. : zahlr. Ill. — ISBN 3-7701-4368-X
MLA CitationSchäfke, Werner. Köln.Köln: Dumont, 2003.
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