MAIN ISSUES OF GEOGRAPHICAL RESEARCHES OF SERVICE. Proc. YSU C: Geol. Geogr. Sci. [Internet]. 2013 Apr. 13 [cited 2026 Mar. 10];47(1 (230):36-42. Available from: https://journals.ysu.am/proceedings-geol-geogr/article/view/vol47_no1_2013_pp036-042