Bidspirit auction | EINSTEIN, ALBERT Albert Einstein. Vier

EINSTEIN, ALBERT Albert Einstein. Vier Vorlesungen über Relativitätstheorie, gehalten im Mai 1921 an der Universitat Princeton. Second edition. With four mathematical diagrams. pp. (2), 70, (2). Original boards. 8vo. Braunschweig: Friedrich Vieweg 1923 ”Four Lectures on the Theory of Relativity, held in May 1921 at Princeton University.” ”Four Lectures on the Theory of Relativity, held in May 1921 at Princeton University.”