Sorokina Galyna Аleksandrovna. Theory and practice of formation of the professional preparedness of future specialists in the field of tourism for ecological education of pupils : д.пед.н. : spec.. 13.00.04 - Теорія і методика професійної освіти : presented. 2011-10-27; popup.evolution: .; Luhansk Taras Shevchenko National University. – , 0511U000822.

Updated: 2026-11-12