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Family name Duplyak (Duplyak , Дупляк ) , in the world, is a rare cognomen. The surname Duplyak is habitual in Ukraine, where it is a rare surname, Bulgaria, and Greece, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Bulgaria.
VARIANT | COUNTRY |
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Duplyak | Greece, Russia, Bulgaria, Ukraine |
Дупляк | Russia, Ukraine |