TY  - BOOK
AU  - Einstein,Albert
AU  - Saha,M.N.
AU  - Bose,S.N.
ED  - Asutosh Collection (National Library, India)
TI  - The principal of relativity
U1  - 530.11 
PY  - 1920///
CY  - Calcutta
PB  - University of Calcutta Press
KW  - Relativity (Physics)
ER  -