TY  - GEN
AU  - Iyer, B. R.
TI  - Advances in gravitation and cosmology
U1  - 530.11 
PY  - 1972///
CY  - New Delhi
PB  - Wiley Easter.
KW  - Relativity Theory
KW  - Gravitation - Proceedings
KW  - Cosmology - Proceedings
ER  -