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Surname Phetwanichkul (Phetwanichkul ) , throughout the world, is a very rare cognomen. The last name Phetwanichkul is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phetwanichkul | Thailand |
Kanrada, Kulrada, Napapach, and Naphachara