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VELYKOCHYY V, DEREVJANKO S, VYCHIVSKYI P. TO THE 80TH ANNIVERSARY OF PROFESSOR KALAKURA YA.S. AND THE 55TH ANNIVERSARY OF HIS SCIENTIFIC AND PEDAGOGICAL ACTIVITY. jpnu [Internet]. 2019 Jun. 20 [cited 2024 Nov. 22];6(2):133-7. Available from: https://journals.pnu.edu.ua/index.php/jpnu/article/view/1885