TY  - GEN
AU  - Penrose, Roger
TI  - Techniques of differential topology in relativity
SN  - 9780898710052
U1  - 530.11 
PY  - 1972///
CY  - Philadelphia
PB  - Siam
KW  - Relativity (Physics)
KW  - Differential topology
KW  - Quantum physics
KW  - Relativity theory
KW  - Space-times
N1  - Includes Bibliographical references
ER  -