"Prof. Dr. Hans Barth was a Swiss journalist and philosopher. Before being appointed professor at the University Zurich he had worked as a newspaper editor."@en . "8 letters"@en . . . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . "WL3000/9/1/111" . . . . "Correspondence with Barth, Hans"@en . . "Correspondence regarding material on the Protocols of the Elders of Zion."@en . . .