Contact Contact: TURK-COSE 2020 Secretariat E-mail1: turk-cose@ohu.edu.tr (NOHU, Turkey) URL: http://www.ohu.edu.tr/turk-cose-tr URL: http://www.ohu.edu.tr/turk-cose-kz URL: http://www.ohu.edu.tr/turk-cose-en