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Keywords from Image Description:
DGV Passagiere . en Number of passengers with the Lake Lucerne steam shipping company VDGV later DGV now from to Own graph numbers according to anniversary publication de Passagierzahlen der Vereinigten Dampfschifffahrtsgesellschaft auf dem Vierwaldstttersee VDGV spter DGV jetzt von bis Eigenes Diagramm Zahlen nach Festschrift