00609naa#a2200205#i#450# EN\\bibl\112677 20260118022745.7 2311-1402 20180925b2018####ek#y0engy0150####ca RUS RU SEASONAL CHANGES IN THE CIRCULATORY SYSTEM ORGANS OF STUDENTS IN A NORTHEN UNIVERSITY Journal article Nizhnevartovsk Nizhnevartovsk State University 2018 5 с. Journal article local . 612.017.2 RUS Pogonysheva I A Pogonyshev D A Lunyak I I vestnik.nvsu.ru