Manukyan S. GEOPHYSICAL METHODS APPLICATION AT THE INVESTIGATION OF HYDROTECHNICAL TUNNELS TRACES IN MOUNTAIN-FOLDED AREAS. Proc. YSU C: Geol. Geogr. Sci. [Internet]. 2017 Aug. 14 [cited 2024 Nov. 21];51(2 (243):81-7. Available from: https://journals.ysu.am/index.php/proceedings-geol-geogr/article/view/vol51_no2_2017_pp081-086