Vier Vorlesungen über Relativitätstheorie gehalten im Mai 1921 an der Universitat Princeton. Mit vier Abbildungen.

Braunschweig, Vieweg & Sohn, 1922. Uncut and unopened in orig. printed wrappers. (4),70 pp.+ Publisher's announcements (2) pp. In mint condition.

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First edition. An abstract in English was published the year before. These four lectures were published the same year as ""The Meaning of Relativity"".Weil 124,