Cognomen Kruopis (Kruopis 
) , in the entire world, is a very rare surname. The surname Kruopis is habitual in Lithuania, where it is quite a rare surname, and Germany, where it is an extremely rare surname.
| kazimieras kruopis LT (b. 1918) |
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| saulius kruopis Lithuanian painter, LT (b. 1960) |
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| julius jonas kruopis Ph.D. Steklov Institute of Mathematics 1969 |
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