Surname Isogaya (Isogaya 
) , all over the world, is a very rare last name. The last name Isogaya is characteristic of Indonesia, where it is a very rare surname, Russia, where it is an extremely rare surname, and the United States.
| sueji isogaya (b. 1907) |
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| yuko isogaya researcher |
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| isogaya shinzaemon Edo-era tea master |
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