Avagyan A, Esmail M. ANALYSIS OF ACTUAL PROBLEMS OF SERVICEOLOGY. Proc. YSU C: Geol. Geogr. Sci. [Internet]. 2013 Aug. 13 [cited 2024 May 20];47(2 (231):35-40. Available from: https://journals.ysu.am/index.php/proceedings-geol-geogr/article/view/vol47_no2_2013_pp035-040