Oktay, Kutay, Kastamonu University, Kastamonu
Ölçen, Olcay, Aviation Consulting Group, ACG, Florida, United States.
Olzhebayeva, Gulbakhyt, University of International Business named after K. Sagadiyev, Almaty, Kazakhstan.
Omarov, Akedil, Instіtute of economіcs of the Commіttee of scіence MSHE RK, Almaty
Omarova, Aizhan, Caspian University of Technologies and Engineering named after Sh.Yessenov, Aktau, Kazakhstan.
Orynbaeva, Ultugan, M. Kh. Dulaty Taraz Regional University, Taraz
Orynbet, Perizat, Turan University, Almaty, Kazakhstan
Orynbet, Perizat, Kenzhegali Sagadiev University of International Business, Almaty
Orynbet, Perizat, University of International Business
Osmanov, Zhasym, University of International Business named after K. Sagadiyev, Almaty
Ospanakunovna, Gulnar, Almaty Technological University, Almaty
Ospanova, Aliya, K. Zhubanov Aktobe Regional University, Aktobe, Kazakhstan.
Ozpenсe, Aylin Idikut, Pamukkale University, Denizli

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ISSN 2789-8253 (Print)
ISSN 2789-8261 (Online)