00551naa#a2200157#i#450# EN\\bibl\56996 20240728122045.7 2542-1840 20230131b2023####ek#y0engy0150####ca RU Legal and Political Reforms and Amendments to the Constitutions of the USSR and the RSFSR during the Perestroika (1985 – Early 1990s) Journal article Kemerovo Kemerovo State University 2023 6 с. Journal article local Kazmin Vladimir Nikolaevich vestnik-pses.kemsu.ru