1994
Paul Lorenzen, German mathematician and philosopher (born 1915)
Paul Lorenzen, German mathematician and philosopher (born 1915)
Paul Lorenzen, German mathematician and philosopher (born 1915)
German mathematician and philosopher (1915–1994)
Paul Lorenzen, German mathematician and philosopher (born 1915)
Paul Lorenzen, German mathematician and philosopher (born 1915)