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| PhD | |
| Izabella Sikorska-Wolak | |
| Retired WULS-SGGW professor | |
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| Warsaw University of Life Sciences - SGGW | |
| Institute of Economics and Finance | |
| Department of Tourism, Social Communication and Counselling | |
| e-mail: izabella_sikorska-wolak@sggw.pl | |
| Phone: (+48) 22 59 34 153 |