TY  - BOOK
AU  - Bose S N
AU  - Minkowski H
AU  - Saha M N
TI  - Principles of relativity
U1  - 530.11 
PY  - 1920///
CY  - Calcutta
PB  - The University
KW  - Physics
KW  - Relativity
N1  - with a historical introduction by P C Mahalanobis
ER  -