Особенности

Navechno
phystech.academia.edu/%D0%98%D0%BE%D0%B0%D0%BA%D0%B8%D0%BC%D0%A0%D0%BE%D0%BC%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%87%D0%A5%D0%B0%D0%B1%D0%B8%D0%B1%D1%83%D0%BB%D0%BB%D0%B8%D0%BD

Язык

русский