RELAT s ¥E,5129A IVITY (PHYSICS)
18 Einstein, Albert, 1879- Ather und relativitits-theorie; rede gehalten am 5, mai 1920 an der Reichs-universitat zu Leiden, von Albert Einstein, Ber-
lin, J. Springer, 1920. 15, (1) p. 22™.
1. Ether (of space) 2. Relativity (Physics) 1 Title. 22-22697
Library of Congress QC177.E5 13)