%0 Journal Article %T SEASONAL CHANGES IN THE CIRCULATORY SYSTEM ORGANS OF STUDENTS IN A NORTHEN UNIVERSITY %A Pogonysheva, I.A. %A Pogonyshev, D.A. %A Lunyak, I.I. %K %J Bulletin of Nizhnevartovsk State University %D 2018 %N %P 5 %I Nizhnevartovsk State University