# Isaäk Martinus van der Vlerk

> Dutch geologist (1892–1974)

**Wikidata**: [Q2524227](https://www.wikidata.org/wiki/Q2524227)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Isaäk_Martinus_van_der_Vlerk)  
**Source**: https://4ort.xyz/entity/isa-k-martinus-van-der-vlerk


## References

1. BnF authorities
2. Leidse Hoogleraren
3. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
4. Virtual International Authority File
5. KNAW Past Members
6. Biografisch Portaal
7. National Library of Israel Names and Subjects Authority File
8. Catalogo of the National Library of India