EXISTENTIAL-PHENOMENOLOGICAL APPROACH TO THE TRANSFORMATION OF EDUCATIONAL CONTENT THROUGH THE ACTUALIZATION OF SCIENTIFIC HERITAGE: THE CASE OF O.M. TUTUNDZHYAN. Educ-21st-Century [Internet]. 2026 Jun. 17 [cited 2026 Jun. 17];8(1):10-28. Available from: https://journals.ysu.am/Educ-21st-Century/article/view/14493