00550naa#a2200157#i#450# EN\AUS PUBLISHERS\bibl\5778 /en/manage/index 20250804042845.1 20211202b2021####ek#y0engy0150####ca RU DEMOGRAPHIC DEVELOPMENT OF THE NORTH-EAST OF RUSSIA IN THE CONDITIONS OF ECONOMIC TRANSFORMATIONS Conference article/thesis Melbourne AUS PUBLISHERS 2021 6 с. Conference article/thesis local Sidorkina Zinaida Ivanovna fht.editorum.ru /en/manage/index