Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
KEYWORDS
1962 achivement adult aged algebraic ancient antique czechoslovakia differential envelope equations face famous geometry historic hronec human integral juraj knowledge letter mail male man mathematician message miloslav old outstanding philately physicist portrait postage postcard postmark publications research retro science seal senior stamp suit valouch vintage works
More images on Dreamstime
Similar Images
More images by the same author
1 week free trial. Any size, for free
Renews at $25/month, cancel or upgrade at any time
Click here for your free trial!
241,800,698 images | 1,217,171 contributors | 53,409,574 total users