00717naa#a2200193#i#450# EN\\bibl\126447 20260708101524.3 2949-1258 20260622b2026####ek#y0engy0150####ca RU Methodological study of the physical concept of mass with entropy assessment of its content Journal article Vladivostok Vladivostok State University 2026 8 с. Journal article local Народное образование. Воспитание. Обучение. Организация досуга. 37 Gnitetskaya Tatyana N. Gnitetskaya Tatyana N. Zherebtsov Klim A. vvgu.editorum.ru