00656naa#a2200169#i#450# EN\\bibl\92986 20250406204857.7 1994-5655 20250207b2025####ek#y0engy0150####ca RU Leonid Rybakovsky’s theoretical contribution to the development of Northern demography Journal article Syktyvkar FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences" 2025 7 с. Journal article local Предмет, области применения и цели демографии. 314.01 Fauzer V V komisc.editorum.ru