An 80-year-old British Holocaust survivor unveiled a memorial at a school in Vienna on Wednesday in commemoration of more than 70 Jewish students expelled by the Nazis in 1938.

Harry Bibring, who was born in Vienna in December 1925 and now lives near London, was just 12 years old when he and dozens of other students were forced to leave the Amerling Gymnasium in April 1938 because of their religion.