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Keywords from Image Description:
Erlangen Burgbergtunnel Ludwigskanal . Eisenbahn Tunnel Chaussee Canal und Flu nebeneinanderlaufend unweit Erlangen Lithographie von Nicholls und Allanson Stadtarchiv Erlangen hansgruener de htm Hans Grner DER ALTE KANAL Nicholls und Allanson PDold Ludwig Canal in Erlangen Burgbergtunnel Erlangen Werker Erlangen History of Erlangen