Surname Kusulja (Kusulja 
) , all around the world, is a very rare last name. The family name Kusulja is characteristic of Southern Europe, particularly Croatia, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kusulja | Croatia |
| marija kusulja researcher (ORCID 0000-0002-3770-9238) |
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