Surname Adèr (Adèr 
) , across the world, is a very rare family name. The cognomen Adèr is characteristic of Western Europe, particularly Netherlands, where it is a very rare surname.
| franciscus bartholomeus adèr writer, NL (b. 1798) |
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| herman adèr Dutch statistician, NL (b. 1940) |
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| hermanus j. adèr Ph.D. Universiteit van Amsterdam 1995 |
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