# The Working Heart

> episode of Marcus Welby, M.D. (S4 E21)

**Wikidata**: [Q114499259](https://www.wikidata.org/wiki/Q114499259)  
**Source**: https://4ort.xyz/entity/the-working-heart


## References

1. [Trakt.tv](https://trakt.tv/shows/marcus-welby-m-d/seasons/4/episodes/21)