Text ( visual ) : unmediated Space, time, and gravitation : an outline of the general relativity theory / by Sir Arthur Eddington. -- : pbk. -- Cambridge [Cambridgeshire] ; New York : Cambridge University Press , 1987, c1920. -- xii, 218 p. : ill. ; 22 cm. -- (Cambridge science classics). -- ISBN 0521337097 ; (BA01183395) ; https://ci.nii.ac.jp/ncid/BA01183395 Author Heading(s): Eddington, Arthur Stanley, Sir. -- Classification(s): LCC : QC173.59.S65 ; DC19 : 530.1/1. -- Subject Heading(s): LCSH : Space and time ; LCSH : Gravitation ; LCSH : Relativity (Physics)