# Chang-chia-k'ou

> 1:250,000 China topographic series map (L500 NK50-10) produced by the Army Map Service, 08/1963

**Wikidata**: [Q99436856](https://www.wikidata.org/wiki/Q99436856)  
**Source**: https://4ort.xyz/entity/chang-chia-k-ou


## References

1. [Source](http://id.lib.harvard.edu/alma/990094028280203941/catalog)
2. [Source](http://id.lib.harvard.edu/fgdc/AMS7810_S250_U54_NK50_10/catalog)