saraga_1932_03

Wolja Saraga's proposal for a photo-electrical instrument in 1932 from the HHI archives

Wolja Saraga’s proposal for a photo-electrical instrument in 1932 from the HHI archives

Wolja Saraga’s proposal for a photo-electrical instrument in 1932 from the HHI archives

Leave a Reply

Your email address will not be published. Required fields are marked *