# Sum Sao

> subdistrict in Phen district, Udon Thani province, Thailand

**Wikidata**: [Q16975920](https://www.wikidata.org/wiki/Q16975920)  
**Source**: https://4ort.xyz/entity/sum-sao


## References

1. [Department of Provincial Administration](http://stat.dopa.go.th/stat/statnew/statTDD/views/showDistrictData.php?statType=1&year=58&rcode=41)
2. [Department of Provincial Administration](http://stat.dopa.go.th/stat/statnew/statTDD/views/showDistrictData.php?statType=1&year=59&rcode=41)
3. [Department of Provincial Administration](http://stat.dopa.go.th/stat/statnew/statTDD/views/showDistrictData.php?statType=1&year=60&rcode=41)
4. [Department of Provincial Administration](http://stat.dopa.go.th/stat/statnew/statTDD/views/showDistrictData.php?statType=1&year=61&rcode=41)