TY  - BOOK
AU  - Hawking, Stephen.
TI  - The nature of space and time / 
SN  - 0 19 564211 2
U1  - C15 
PY  - 1995///
CY  - New Delhi : 
PB  - Manzar Khan, Oxford University Press , 
KW  - Physics <Spacetime>
ER  -