Title: Obʺektivnyĭ kalendarʹ tipov atmosfernoĭ t︠s︡irkuli︠a︡t︠s︡ii i ikh raznovidnosteĭ na urovne 500 gPa nad vtorym estestvennym sinopticheskim raĭonom severnogo polusharii︠a︡ za 1964-1990 gg
Subjects: Atmospheric circulation
Places: Northern Hemisphere