# P. P.  Nikolaev
**Wikidata**: [Q4320173](https://www.wikidata.org/wiki/Q4320173)  
**Source**: https://4ort.xyz/entity/p-p-nikolaev


## References

1. Integrated Authority File
2. Virtual International Authority File
3. Library of Congress Authorities
4. National Library of Israel Names and Subjects Authority File