# John W. Littlefield

> American geneticist

**Wikidata**: [Q113581143](https://www.wikidata.org/wiki/Q113581143)  
**Source**: https://4ort.xyz/entity/john-w-littlefield


## References

1. [Source](https://hub.jhu.edu/2017/05/01/john-littlefield-hopkins-amniocentesis-obituary/)
2. [Source](http://www.nasonline.org/member-directory/deceased-members/53192.html)
3. Guggenheim Fellows database
4. NUKAT