# Psychotechnisch Laboratorium der PTT

> Dutch laboratory

**Wikidata**: [Q125422188](https://www.wikidata.org/wiki/Q125422188)  
**Source**: https://4ort.xyz/entity/psychotechnisch-laboratorium-der-ptt


## References

1. [Algemeen Handelsblad](https://resolver.kb.nl/resolve?urn=KBNRC01:000042319:mpeg21:a0105)