# Northrop X-21

> military aircraft

**Wikidata**: [Q2001199](https://www.wikidata.org/wiki/Q2001199)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Northrop_X-21)  
**Source**: https://4ort.xyz/entity/northrop-x-21


## References

1. Freebase Data Dumps. 2013