TY  - BOOK
AU  - Sachs B K Ed.
ED  - International conference on general relativity and cosmology (1969 : Villa Monastero)
TI  - Proceeding on general relativity and cosmology
T2  - Italian physical society
U1  - CN0aB9:8p1,N69, L1 
PY  - 1971///
CY  - New York    
PB  -  Academic press       
KW  -  General relativity
KW  - Physics
ER  -