# Poltava Gravimetric Observatory
**Wikidata**: [Q4370794](https://www.wikidata.org/wiki/Q4370794)  
**Source**: https://4ort.xyz/entity/poltava-gravimetric-observatory


## References

1. Q137170397
2. [Source](http://www.vestishki.ru/content/1921-%E2%80%93-1930)