TY  - BOOK
AU  - Silberstein,Ludwik
TI  - The size of the universe: attempts at a determination of the curvature radius of spacetime 
AV  - QC6 .S48
PY  - 1930///
CY  - [London]
PB  - Oxford University Press
KW  - Relativity (Physics)
N1  - Includes bibliographical foot-notes
ER  -