المؤلفون: Von Mises, Richard, 1883-1953.

المساهمون: Lion, Ferdinand, 1883-1965, correspondent., Lorenz, Karl, 1888-1961, correspodent.

مصطلحات موضوعية: Harvard University -- Faculty., Applied mathematics., Science -- Philosophy., Manuscripts for publication., Photographs.

Subject Person: Von Mises, Richard, 1883-1953.