TY  - BOOK
AU  - Sachs B K ed.
ED  - Italian Physical Society
ED  - International School of Physics `Enrico Fermi'(47th course )
TI  - General relativity and cosmology: proceedings
U1  - 530.11 
PY  - 1971///
CY  - London
PB  - Academic Press
KW  - Cosmology
KW  - Physics
KW  - Relativity
ER  -