# John M. Haar
**Wikidata**: [Q62695323](https://www.wikidata.org/wiki/Q62695323)  
**Source**: https://4ort.xyz/entity/john-m-haar


## References

1. [Source](http://ci.nii.ac.jp/author/DA01075402?l=en)
2. CiNii Research
3. [Source](http://datos.bne.es/persona/XX1606551.html)
4. [Source](https://opac.si.cobiss.net/opac7/conor/48756067)
5. [Source](http://trove.nla.gov.au/people/1258497?q&c=people)