What date is this day?

In 1994, the UN General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer.

 

Iravaban.net

Հետևեք մեզ Facebook-ում

  Պատուհանը կփակվի 6 վայրկյանից...   Փակել