00669naa#a2200169#i#450# EN\\bibl\126924 20260711022627.6 2712-7761 20260630b2026####ek#y0engy0150####ca RU From teaching experience. XIX. The 85th anniversary of the textbook “Crystallography” (Popov, Shafranovsky, 1941) Journal article Syktyvkar FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences" 2026 3 с. Journal article local Вывод 32-х классов симметрии. 548.127 Voytehovskiy Yuri Leonidovich ras.editorum.ru