Avagyan, A. 2018. ASSESSMENT OF HUMANISTIC PRINCIPLES OF ECOTOURISM IN THE CONTEXT OF SUSTAINABLE DEVELOPMENT. Proceedings of the YSU C: Geological and Geographical Sciences. 52, 2 (246) (Aug. 2018), 125–132. DOI:https://doi.org/10.46991/PYSU:C/2018.52.2.125.