. "Prof. Dr. Carl Ludwig (1889-1967) was a Swiss jurist and university scholar."@en . . . . "This material has been digitised. Readers should book a reading room terminal to access it."@en . . "4 letters"@en . "Correspondence regarding a report filed by Ludwig."@en . "WL3000/9/1/931" . . . "Correspondence with Ludwig, Carl"@en . . .