Surname Hrynchak (Hrynchak 
) , globally, is a very rare last name. The family name Hrynchak is habitual in Portugal, where it is a rare surname, Canada, where it is a very rare surname, and Russia, where it is an extremely rare surname.
| patricia hrynchak researcher |
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| mariya v hrynchak researcher ORCID ID = 0000-0003-1152-2093 |
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