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Cognomen ถาวรประสิทธิ์ (ถาวรประสิทธิ์ , Thawomprasit, Tavonprasit ) , in all the world, is a very rare family name. The cognomen ถาวรประสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
VARIANT | COUNTRY |
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ถาวรประสิทธิ์, Thavonprasit, Tavonprasit | Thailand |
Tavornprasit, Thavornprasit, Thavornprasith, Thawonprasit, and Thawornprasit