Penkala
How can a plane fly? Who invented the first mechanical pencil and patented more than eighty other various inventions? All of that you can find out in this colorful educational film about a very important man, inventor and engineer.
How can a plane fly? Who invented the first mechanical pencil and patented more than eighty other various inventions? All of that you can find out in this colorful educational film about a very important man, inventor and engineer.