Einfuhrung in die Mathematische Philisophie.
Munich: Drei Masken, 1930. Translated into German by E. J. Gumbel and W. Gordon. 212 pages. 8vo, original gray printed wrappers (light wear at spine ends). Munich: Drei Masken, 1930. A very good(+) copy, with ownership signature of art historian Meyer Schapiro. More