Meine-Deutsche-Bahn.de: Haltestelle Helmholtzstr. Duisdorf - Linie Bus 609 (Holzlar Gielgen, Bonn). DB Fahrplan an der Haltestelle in Bonn Helmholtzstr. Duisdorf.
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| 6 | 01 | 29 | 49 |
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| 16 | 08 | 28 | 48 |
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| 18 | 08 | 28 | 48 |
| 19 | 08 | 29 | |
| 20 | 01 | 31 | |
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| 23 | 01 | 31 |