A satellite antenna is depicted against the background of a beautiful skyA satellite antenna is depicted against the background of a beautiful sky
Yellow inscription in english with the symbols of the hammer and sickle on a red backgroundYellow inscription in English with the symbols of the hammer and sickle on a red background
Poster with the image of communists and capitalistsPoster with the image of communists and capitalists
A three-dimensional picture of the bonds of molecules with highlights on the connection pointsA three-dimensional picture of the bonds of molecules with highlights on the connection points