# Tram line O

> tram line in Vienna

**Wikidata**: [Q20439830](https://www.wikidata.org/wiki/Q20439830)  
**Source**: https://4ort.xyz/entity/tram-line-o-q20439830


## References

1. [Source](http://www.strassenbahnjournal.at/wiki/index.php?title=Linie_O)