00576naa#a2200157#i#450# EN\URAL'SKIY GOSUDARSTVENNYY AGRARNYY UNIVERSITET\bibl\39662 20260314214004.6 1997-4868 20200930b2020####ek#y0engy0150####ca RU The question of structural changes in the territorial location of milk production in the Leningrad Region Journal article Ekaterinburg Ural State Agrarian University 2020 10 с. Journal article local Nikonova Natal'ya Aleksandrovna usau.editorum.ru