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EINSTEIN, ALBERT. Äther und Relativitätstheorie. Rede gehalten am 5. Mai 1920 an der Reich-Universität zu Leiden. Berlin, Julius Springer, 1920. 16 p. Orig. printed wrapper, a little browned and with a small hole in upper right hand corner. ¶ First edition of an important paper by Albert Einstein. Its importance was immediately recognized and it was shortly after its publication translated into Italian, English, Polish, Russian and Hungarian. Weil 111. DKK 1.575 NOK~ 1.670 SEK~ 1 970 EUR~ 210 USD~ 327 GBP~ 140 JPY~ 34.230 · ALD11248 · Aldus Antikvariat, Frederiksberg C (DK) ·

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