KACHMAR, V. and TARNAVSKYI, R. 2021. NATURAL AND PHYSICAL SCIENCES AT LVIV UNIVERSITY IN THE SECOND HALF OF THE XIXth – BEGINNING OF THE XXth CENTURY: STRUCTURAL AND PERSONNEL TRANSFORMATION. EAST EUROPEAN HISTORICAL BULLETIN. 20 (Sep. 2021). DOI:https://doi.org/10.24919/2519-058X.20.240145.