Einstein's theories of relativity and gravitation : A selection of material from the essays submitted in the competition for the Eugene Higgins prize of $ 5.000
Inbunden bok. Scientific American publishing Co. 1921. 345 sidor.
Gott skick. Skyddsomslag saknas. Illustrerat helklotband. 2 exlibrisetiketter. Vissa bruksspår på pärmarna.