«7/24 tm» № 37 (172) 11.09.2023
One of the commemorative dates of the United Nations – the International Day of Clean Air for blue skies was designated September 7. In 2020, it was celebrated for the first time.
1327
«7/24 tm» № 37 (172) 11.09.2023
One of the commemorative dates of the United Nations – the International Day of Clean Air for blue skies was designated September 7. In 2020, it was celebrated for the first time.
