TY  - BOOK
AU  - Al-Khalili, Jim
TI  - Black holes, worm holes and time machines
SN  - 0-7503-0560-6
PY  - 2000///
CY  - Bristol
PB  - IOP Publishing
KW  - Black holes
KW  - Space
KW  - Time machines
KW  - Worm holes
ER  -