Select Source
If current server doesn't work please try others
Select Episode
IMDb
1.0
Operation «Helium»
18 min1991
IMDb
1.0
On the example of the history of the discovery of the "solar substance" Helium, the history of the most important discoveries in the field of physics and chemistry of the early XX century is given.
GenreDocumentaryCountrySoviet UnionReleaseJanuary 1, 1991
