Cognomen Jeršek (Jeršek 
) , in the entire world, is a rare last name. The cognomen Jeršek is characteristic of Southern Europe, particularly Croatia, where it is quite a rare surname.
| marjetka jeršek slovene writer and painter, SI (b. 1961) |
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| barbara jeršek researcher (ORCID 0000-0002-6594-063X), SI |
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| miha jeršek Slovene geologist, SI |
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