TY  - BOOK
AU  -  ,  .
TI  - Understanding Space and Time:Block 6 Topics in Space and Time / 
SN  - 0 335 08005 7
U1  - C81 
PY  - 1984///
CY  -   : 
PB  - The Open University Press , 
KW  - Physics <Space and time>
ER  -