"This material has been digitised. Readers should book a reading room terminal to access it."@en . "WL3000/9/1/1562" . . "7 letters"@en . . . . . . . . . . "Correspondence with Wittenberg, Alexander"@en . "Correspondence regarding a request by Wittenberg for bibliographic information on the subject of schools and universities in the Nazi era."@en . . "Prof. Dr. Alexander Israel Wittenberg (1926-1965) was a Swiss mathematician of Russian-German descent."@en .