After a preliminary conference in Prague in 1934, the First International Congress for the Unity of Science was held at the Sorbonne, Paris, 16–21 September 1935. It was attended by about 170 people from over twenty different countries.
After a preliminary gathering in Prague in 1934, the First International Congress for the Unity of Science was held at the Sorbonne in Paris between September 16 and September 21, 1935. Approximately 170 participants represented over twenty different nations.