Wyłącz wtyczkę AdBlock, aby oglądać filmy i zapewnić prawidłowe działanie
strony.
niedostępny
Esam
0+
Esam
Do ulubionych
Dodano
SD
16 minuty
Janis Voitkas studies energy to learn to control it and solve energy saving problems, which are relevant not only for Latvia but the rest of the world. Thanks to his inventions it was possible to make a great progress in this scientific branch.
