Oldřich Speerger Movies

This popular science documentary offers insights into a physiology laboratory conducting intensive investigations into the possibility of humans...

Baron Dolanský is deeply interested in eugenics, he knows what happens when the same plants are crossed over and over again, and he rightly...

The processing of hops

Slide about the danger of fires. A member of the SNB meets a group of pioneers in the forest, who teach them about the damage caused by fire in a...

Agitation about the need to supply consumers with coal already in the summer months of the year.