00501naa#a2200145#i#450# EN\AUS PUBLISHERS\bibl\5778 20241223032532.1 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 w-science.com